Proceedings of the Cambridge Entomological Club.
Psyche 29(3):123-125, 1922.

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19221 Proceedings of the Cambridge Entomological Club. 123 Neiva, Arthur. 1913. Da transmiss50 do Trypanosoma Cruzi pela Triatoma sordida Stal. Brazil-Medico, xxvii, No. 30, p. 309.
Neiva, Arthur. 1913. Mult,iplica@io na Vinhuca (Triatoma infestans Klug) do tripanosomo do ma1 de cadeiras. Brazil- Medico, xxvii, No. 35, p. 356.
Neiva, Arthur. 1913. Algunos datos sobre Hemipteros hema- t6fagos de la America del Sur, con la descripcih de una nueva especie. Anal. Mus. Nac. Buenos Aires, xxiv, pp. 195-198.
Neiva, Arthur. 1914. Revisgo do genero Triatoma Lap. Rio de Janeiro: Typ. do "Jornal de C~mmercio.~' pp. 71+ 8 (bibliography).
Neiva, Arthur, 1914. ContribuqFio para o estudo dos Reduvidos hematofagos, corn a descripq50 de uma nova especie, T. tenmuis.
Mem. Inst. Osw. Cruz, vi, Fasc. 1, p. 35. PROCEEDINGS OF THE CAMBRIDGE ENTOMO-
LOGICAL CLUB.
At the meeting of October 11, 1920, Prof. W. M. Wheeler read a paper by himself and Mr. L. H. Taylor on parasitism of Vespa arctica upon Vespa diabolica which was published in December 1921.
A discussion followed on parasitism in general and especially the habits of Stylops in Andrena, Halictus and other Hymenoptera.
Dr. R. fieber Howe showed remains of beetles from peat deposits at Eastham, Cape Cod, Mass., between layers of glacial till and too far away from present outcrops to be of recent origin.
At the meeting November 8, Mr. L. B. Uichanco read a paper on the development of certain unicellular organisms which live symbiotically in the bodies of Aphids. These are found in the ovaries and enter the eggs at an early stage. Later Pu&e 29:121-126 t 1922). bnp:l~psycb.cn~chtb.ore/lWW- llS html



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124 Psyche [~une
they increase in number in a mass of cells in the middle of the embryo which becomes divided in two and in the newly hatched Aphid forms a pair of conspicuous organs. The paper was illus- trated by numerous drawings.
Mr. Roland Hussey showed specimens of Scaptocoris castaneus from Venezuela belonging to a tropical group of the Hemipterous family Cydnidse in which the hind tibia is swollen and truncate and the tarsus absent while the front tibia is prolonged by the fusion of the apical spines much beyond the insertion of the tarsus and the latter is much reduced in size. Mr. F. W. Dodge showed 125 species of the coleopterous family Meoidse, part of the collection of the late Mr. Fuchs of California.
At the meeting of December 13, Prof. C. T. Brues showed several rare wingless Hymenoptera of unknown habits, one a species of Pedinornma Westw. and another of the genus Algoa. J. H. Emerton exhibited his portable collection of two hundred species of native spiders illustrated by charts, drawings and photographs of cobwebs.
Mr. F. W. Dodge exhibited a collection of beetles of the family Coccinellidse.
The annual meeting was held January 10, 1922. The Secretary's report shows than ten meetings were held during the past year with average attendance of nineteen persons. Four new members were elected and the present membership numbers sixty-nine. The following officers for 1922 were elected: Pres- ident, Wm. M. Wheeler; Vice president, L. R. Reynolds; Sec- retary, J. H. Emerton; Treasurer, Fred H. Walker; Editor, C. T. Brues; Executive committee, Nathan Banks, S. W. Denton, L. w. swett.
Mr. Nathan Banks in retiring from the presidency addressed the Club on the value of field observation and the importance of careful records and prompt publication. He thought much valuable work was lost through failure to appreciate its impor- tance, and through timidity in failing to publish what had been discovered. Observers should not be tempted to wait too long for perfection, as completion of their investigations in such things



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19221 Proceedings of the Cambridge Entomological Club. 125 are of necessity imperfect and must be revised and republished as knowledge improves.
Mr. R. Heber Howe spoke of the genus Gompus in New Eng- land. There are 22 species but only two, exilis and spicatus, are common. Other species, usually rare, occur at some seasons in great abundance owing perhaps to the period of two or three years passed in development.
Mr. J. H. Emerton gave a short account of the meetings of the American Association for the Advancement of the Science at Toronto during Christmas week.
At the meeting of February 14 Mr. 0. E. Plath continued his account of the habits of Bombus begun at the September meeting, by reading a paper on the genus Psithyrus and its habits in the Bombus nests which he had under observation the past summer.
The accepted design for a Club Seal was shown and now ap- pears on the cover of Psyche.




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