J. A. Hyslop.
Elateridae and Throscidae of the Stanford University Expedition of 1911 to Brazil.
Psyche 23(1):16-21, 1916.

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16 Psyche [February
ELATERIDB AND THR0SCID.E OF THE STANFORD UNIVERSITY EXPEDITION OF 1911 TO BRAZIL. BY J. A. HYSLOP,
Bureau of Entomology, Washington, D. C.
Through the kindness of Dr. W. M. Mann, of the Bussey Insti- tution, Harvard University, I have been accorded the great pleas- ure of examining the Elatedoe and the single Throscid collected on the Stanford expedition of 1911 to Brazil. The collection is small and, contrary to most tropical collections, contains excellent series of several species. It contains three new species, two in the genus Monocrepidius and one which I tentatively place in the genus Drasterius. The types of these species have been deposited in the Museum of Comparative Zoology at Harvard University. The Madeira River collections are remarkably inter- esting as the fauna of this region is bound to throw light on the relationship between the Andean and Amazonian basin faunse, and thus to the relationship between the South and Central Ameri- can faunas. Following is a list of the specimens collected. The
Elateridce were all collected by W. M. Mann, Fred Baker and Har- old Heath.
Drapetes plagmtus (Boh.) Gerst.
............
AbunA, Rio Madeira, Brazil. (Mann & Baker). .1 specimen Previously recorded from several parts of Central and South America, and Boheman has recorded the species from San Francisco, Cal. ELATERIDB.
Chalcolepidius candezei Dohrn.
forma typica
............. AbunA, Rio Madeira, Brazil (Mann & Baker). .2 $ specimens
...................
Madeira-Momorb R. R. Co. Camp 39.
.2 9 specimens
var. a. elytra as in forma typica, vestiture of pronoturn and ventron green. Porto Velho, Rio Madeira, Brazil (Mann & Baker). ....... .1 ? specimen var. b. vestiture of elytral strise ferruginous yellow, pronotum and ventral vestiture green.
Madeira-Mamorf R. R. Co. Camp 39, Rio Madeira, Brazil (Mann &Baker) 7 9 specimens
Psi& 2M6-20(1916). hup llpsyche rn~cluborgI23121-016 html



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19161 Hyslop-Elateridoe and Throscidoe 17 Madeira-Mamore R. R. Co. Camp 35, Rio Madeira, Brazil (Mann & Baker) 1 Q specimen
Madeira-Mamore R. R. Co. Camp 41, Rio Madeira, Brazil (Mann & Baker) 2 Q specimens
Madeira-Mamore R. R. Co. Camp 43, Rio Madeira, Brazil (Mann & Baker) 1 Q specimen
Chalcolepidius limbatus Esch.
Maranguape Mountains, Ceara, Brazil (W. M. Mann) ... .I$, 1 Q specimen Independencia, Parahyba, Brazil (Mann & Heath). ........ .1 Q specimen Semiotus furcatus (F.) Lap. var.
AbunA, Rio Madeira, Brazil (Mann & Baker). ............ .1 specimen Semiotus ligneus (Linn.,) Westwood.
Madeira-Mamore R. R. Co. Camp 39, Rio Madeira, Brazil (Mann & Baker) 1 specimen
Semiotus suturalis (I?.) Lap.
Rio Madeira, Brazil (Mann & Baker). ..................... .1 specimen Ischiodontus nigritu Cand.
Para, Brazil (W. M. Mann). .............................. .1 specimen Ischiodontus ichthydius Cand.
Manaos, Brazil (Mann & Baker). .......................... .1 specimen Previously only recorded from Central America and Mexico. Ischiodontus subsericeus Cand.
Para, Brazil (W. M. Mann) ............................... .1 specimen Pyrophorus noctilucus (Linn.) Esch.
Madeira-Mamore R. R. Co. Camp 39, Rio Madeira, Brazil (Mann & Baker) 1 8, 1 Q specimen
Common in all parts of intertropical America. Pyrophorus amplicollis Cand.
Madeira-Mamore R. R. Co. Camp 39, Rio Madeira, Brazil (Mann & Baker) 1 Q specimen
Cardiorhinus bilineafus (Fab.) Germ.
Para, Brazil (W. M. Mann). ............................ .1 specimen Cardiorhinus cuneatus Cand.
Manaos, Brazil (Mann & Baker). ........................ .1 specimen Cardiorhinus castanipennis Germ.
.........................
Manaos, Brazil (Mann & Baker).
.1 specimen
Trichophorus crassus (Cand.) Schw.
...............
Abunh, Rio Madeira, Brazil (Mann & Baker). .1 specimen
Horistonotus elegans (Sol.) Cand.
................................
Natal Brazil (W. M. Mann)
.2 specimen
Monocrepidius brunnipennis Cand.
...........
Independencia, Parahyba, Brazil (Mann & Baker). .I specimen
Monocrepidius stigmosus Germ.
...........
Independkncia, Parahyba, Brazil (Mann & Heath). .1 specimen
Monocrepidius madierensis sp. nov.
......................
Rio Madeira, Brazil (Mann & Baker).
.1 specimen




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18 Psyche
Monocrepidius bakeri sp. n.
Rio Madeira, Brazil (Mann & Baker). .................. Aeolus testudineus Champ.
........... Itacoatiara, Amazonas, Brazil (Mann & Baker) The only other locality known is that of the two cotypes; Paso Antonio, Guatemala, (Champ.).
Aeolus biplagiatus Cand.
......
Independencia, Parahyba, Brazil (Mann & Heath). CearA-mirim, Rio Grande do Norte, Brazil (W. M. Mann) . Heteroderes laurentii (Guer.) Cand.
......
Porto Velho, Rio Madeira, Brazil (Mann & Baker). . . Rio Madeira, Brazil (Mann & Baker). ...................... .3 specimens ...............
Itacoatiara, Amazonas, Brazil (Mann & Baker) .1 specimen
Para, Brazil (W. M. Mann) ................................ .1 specimen Drasterius manni sp. n.
.........
Independencia, Parahyba, Brazil (Mann & Heath). .4 specimens
[February
. .1 specimen
. .1 specimen
. .S specimens
. .1 specimen
52 specimens
The single specimen of Semiotus furcatus (Fab.) Lap. (Fig. 1, b) is a remarkable variety, as it is undoubtedly the intermediate between typical furcatus (Fig. 1, a) which inhabits eastern Amazonas, Vene- zuela,
Guiana, etc., and S. bilineatus Cand.
(Fig. 1, c) which
is indigenous to Colombia.
S. fulvicollis Blanch. (Fig. 1, d) is
but a variety of furcatus, separated on the furcation of the marginal black vitta being carried to the tip of the elytron, thereby making a submarginal vitla. In typical furcatus the marginal vitta is furcate to beyond the middle and the thoracic vitta is narrowly fusiform. In S. bilineatus the vitta is completely fused and the thoracic vitta is oval, and covers more than one third of the notum. The specimen in this collection and another similar specimen in my collection, taken at Pebas, Peru, the lateral marginal vittse are similar to those of furcatus but the dorsal vittse are similar to S. .
bilineatus.
The series of specimens of Chalcolepidius candezei Dohrn. in- clude two very distinct varieties and one intermediate. The typical form collected at Abun6 and Camp 39 has the stria1 vittse thickly beset with whitish colored scales, and the prothorax and ventral surfaces with bronze purple scales. Var. b. collected at R. R. Camps 35,39,41, and 43 has the elytral interstrial spaces clothed with metallic green scales and striae beset with deep ferruginous scales, the thorax and ventron clothed with metallic green scales. Var. a. collected at Porto Velho is



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19161 Hyslop-Elderid and Throscide 19
intermediate between the other two. It has elytra like the forma typica and the rest of the vestiture similar to var. b. Ischiodontus ichthydius Cand. is quite common in Mexico and Central America, but this is the first record I have seen of the collection of the species in continental South America. The collect- ing of Aeolus testudineus Champ. from Amazonas is remarkably interesting, inasmuch as this species is unknown in literature, ex- cept for the two cotypes mentioned by Champion1 from Guatemala. Fig. 1. Species of Semiotus; a. S. furcatus; b. S, jur- catus, var.; c. S. bilineatus; d, S. fulvicollis. Horistonotus elegans (Sol.) Cand. is recorded only from Chilki by CandCze.
Drasterius manni sp. nov. (PI. V, Fig. la). Piceous black, moderately densely greyish pilose, pile long. Anterior part of
front, anterior angles of the prothorax, anterior angles and tip of elytra, obscurely reddish brown, under parts castaneous, legs dusky yellow, antennae yellowish fer- ruginous. Front strongly umbilicate punctate, pronotum densely on sides and sparsely on disc umbilicate punctate (PI. V, Fig. lb). Posterior angles very short and almost rectangular, not carinate. Deep incision on posterio margin of prono- turn near posterior angles. Proplurse moderately densely umbilicate-punctate, punctures elongate near the sutures (PI. V, Fig. Id) becoming round as they approach the side margins. Prosternum with but few scattered simple punctures almost without punctuation. Scutellum pentagonal. Posterior coxal plates (PI. V, Fig. 1c) very abruptly widened near middle but without median tooth, outwardly incomplete. Elytra punctate striate, stria1 punctures elongate and about as dis- 1 Biol. Centr. America, Vol. 111, Coleop., p. 362, 1895.



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20 Psyche [February
tantly placed as the interstitial spaces. Interstices almost flat, not punctate,
feebly rugose. Joints of tarsi (PI. V, Fig. Ie) gradually decreasing in length from first to fourth. Ungues with basal angles strongly produced (PI. V, Fig. If) Antennal joints two and three sub-equal, sylindrical, three almost as long as four. Joints four to ten elongate triangular, joint eleven suboval not strongly constricted. Length, 3 to 4 mm.
Type locality: Independhncia, Parahyba, Brazil. Typz: No. 9048 deposited in Mus. Comp. Zotil., Harvard University. Paratypes: Three specimens from type locality. Type and paratypes collected by Messrs. W. W. Mann and Harold Heath. This species, which is named in honor of Dr. W. M. Mann, will fall near Drasterius pullatus Cand. in Candeze's Monograph. Monocrepidius madeirensis sp. nov. (PI. V, Fig. 2a). Moderately elongate, depressed, length four and two-third times width, moder- ately dense and finely yellow pubescent. General color reddish yellow or amber.
Head concolorous with body, marked by two parenthesis-shaped infuscate vittse on vertex, eyes dark brown; pronotum with a pair of parenthesis-shaped dark brown vitta which attain the anterior margin. Elytra slightly darker than the prothorax with two brown transverse bands, one before the middle and the other halfway be- tween this band and the apex, and a median longitudinal vitta which extends from the scutellum to the anterior transverse band. Scutellum and humeral angles yellow. Ventron brownish yellow. Legs and antennae yellow. Front slightly convex, finely punctate, anterior margin feebly rounded, terminal joint of maxilliary palpi securiform. Antennal joints two and three small, together not quite equal to four, joint three longer than two (PI. V, Fig. 2b). Prothorax longer than broad, sides feebly rounded, convergent anteriorly from middle, quite depressed, pronotum with slightly unequal punctuation; posterior angles very slightly divergent, unicarinate, carina almost fused with lateral margin to base of posterior angles where they di- verge, carina not much longer than angles. Elytra two and one-fourth times length of prothorax, almost as wide as latter, punctate striate, interstices slightly convex, not spinose at tips. Fourth tarsal joint (PI. V, Fig. 2c) bearing a large broad lobe easily seen from above.
Length, 7 mm.
Type locality: Rio Madeira, Brazil.
Type: No. 9047 Mus. Comp. Zcol. Harvard University. Type collected by W. M. Mann and F. Baker. This species is named from the type locality and is near depressi- pennis Cand.
Monocrepidius bakeri sp. nov. (PI. V, 3a). Elongate, slender, three and one-half times as long as broad, moderately convex, vestiture yellow, dense and very fine.
General color infuscate amber; head black, labrum black, antenna; amber, under parts of head and palpi yellow; pronotum



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