G. C. Fall.
A new Coelambus from a Thermal Spring in Nevada.
Psyche 35(1):64-65, 1928.

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64 Psyche arch
A NEW CCELAMBUS FROM A THERMAL SPRING IN NEVADA.
BY H. C. FALL,
Tyngsboro, Mass.
Coelambus bruesi n. sp.
Narrowly ovate, perceptibly attenuate posteriorly. Head
and elytra fuscotestaceous, the clypeus in front diffusely paler, the lateral margins of the elytra somewhat so. Prothorax ty- pically yellow, vaguely infuscate postero-medially. Head minutely alutaceous and finely sparsely punctate. Antenna; pale basally, outer half infuscate. Prothorax finely margined at sides, these nearly straight and continuous with the sides of the elytra; surface polished, punctuation fine and rather sparse on the disk, becoming close and somewhat coarser along the front and rear margins. Elytra polished, sculpture consisting of finer and coarser punctures intermixed, the disparity more conspicuous in basal half.
Body beneath black, polished; metasternum and coxal plates coarsely and closely punctate except at middle; venter coarsely punctate laterally at base, elsewhere finely and sparsely so. Legs either entirely pale or with the femora darker me- dially. Front and middle tarsi of male distinctly dilated, the 2nd joint widest; anterior protarsal claw of male a little thicker and more strongly curved.
Length 3.5 mm. ; width 1.8 mm.
Described from a single pair (8 9 ) taken by Prof. C. T. Brues at Ruby Valley, 65 miles south of Wells, Nevada, in a hot spring; temperature 39.2 O-40. OC.
This species is clearly to be associated with compar and nigrescens by its dual system of elytral punctuation and the conspicuously wide second joint of the male protarsus. The form is narrower and color typically darker than in compar, in which also the punctuation of the upper surface is somewhat Pachi 35:64-65 (1928). hup Wpsycht einclub orgtW35-064 html



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19281 Proceedings of the Cambridge Entomological Club 65 finer and that of the metasternum and coxal plates distinctly sparser and less coarse than inthe present species. As compared with nigrescens the present species is more ovate (more at- tenuate posteriorly), less dark in color, somewhat more coarsely punctate, with the disparity in size of elytral punctures less marked in the posterior half, and the second joint of the male protarsus a little smaller and less triangular. The species is apppropriately and with pleasure dedicated to Prof. Brues, who kindly permits me to retain the male type. The female allotype will, at his suggestion, be deposited in t,he
collection of .the Museum of Comparative Zoology at Cambridge. PROCEEDINGS OF THE CAMBRIDGE ENTOMOLOG-
ICAL CLUB.
During the year 1927 eight meetings were held, with the following programs: February 8: Mr. W. L. W. Field, "The Back- ground of the Early Work of Thaddeus W. Harris." March 8: Professor C. T. Brues and Mr. P. J. Darlington, Jr., "Insect Collecting at the Harvard Tropical Laboratory, Cuba." April 12: F. W. Dodge, "Over the Range (White Mountains, N. H.)," 'and Mr. J. H. Emerton, "Spider Notes." May 10: Mr. Arthur Loveridge, F. E. S., C. M. Z. S., "Observations on Some East African Insects." June 14: Mr. F. M. Carpenter, "Some Recent and Fossil Insects from Kansas, Colorado, and Texas." October
11 : Summer collecting notes, by several members. November 8 : Mr. P. J. Darlington, Jr., '(Collecting Coleoptera in the Moun- tains of Washington and Oregon." December 13: Mr. F. M. Carpenter, "Collecting Fossil Insects in Western United States." The Club lost one member by death, Mr. F. C. Bowditch, of Brookline, Massachusetts.
Eight new members were elected,
bringing the membership number to eighty. F. M. Carpenter, Secretary.




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