276 ENTOMOLOGICAL NEWS. [June, ' IJ 



a season, one reaching the adult stage in June, the other in 

 August. Since these insects draw quite largely in their young 

 stages upon the ostracods and similar organisms, which repre- 

 sent a chief food supply for young fish, as well as preying 

 upon small fish directly, as has been noted several times, they 

 deserve more careful study. This task is greatly facilitated 

 by a workable key to the species and by some knowledge of 

 their feeding habits. 



Bibliography. 



Amyot, C. J. B., et AuDiNET Serville, 1843. — Histoire naturelle des 

 Insectes — Hemipteres. Paris. 



Barber, H. G., 1913. — Aquatic Hemiptera. Jr. N. Y. Ento. Soc. XXT, 

 pp. 29-32. 



Brocher, Frank, 1909. — Recherches sur la Respiration des insectes 

 aquatiques adultes. La Notonecte in : Annales de Biologic lacus- 

 tre, Tome IV. 



Ibid, 1909. — Recherches sur la Respiration des Insectes Aquatiques 

 (imagos). Nepe, Hydrophile, Notonecte, Dyticidae, Haemonia, 

 Elmides. (Resume of previous paper.) 



Ibid, 1913. — Recherches sur la respiration des insectes aquatiques adultes 



- in : Zoolog. Jahrb., 33 Band, 2 Heft. 1913. (A response to Hoppe's 

 paper). 



BuENO, J. R. DE LA ToRRE, 1905. — The Genus Notonecta, in America 

 North of Mexico: Jr. N. Y. Ent. Soc. XIII, p. 144. 



Ibid, 1906. — Ways of progression in water bugs. Ent. News 17: pp. 1-4. 



Ibid, 1908. — Concerning the Notonectidae and some recent writings on 

 Hemipterology. Can. Ent. 40, p. 211. 



CoMSTOcK, J. H., 1887. — Note on Respiration of Aquatic Bugs. Am. 

 Nat. Vol. XVI, p. 577. 



Delcourt, a., 1907. — De la Necessite d'une Revision des Notonectes 

 de France in: La Feuille des Jeunes Naturalistes (Rennes) No. 

 442, Aug. 1st, pp. 198-207. 



De Geer, 1778. — Memoires pour servir a I'histoire des insectes. 



Essenberg, Christine, 1915. — Habits and Natural History of the Back- 

 swimmers in : Jr. Animal Behavior, Cambridge. Vol. 5, No. 5, 

 PP- 381-390. 



Garman, H., 1888. — Bulletin Illinois State Laboratory of Natural His- 

 tory, Vol. HI, p. 174. 



Hoppe, Julian, 1912. — Die Atmung von Notonecta glauca. Zoologische 

 Jahrbiicher, Jena. 



Hungerford, H. B., 1917. — The Egg Laying Habits of a Back-swim- 

 mer, Buenoa margaritacea Bueno, and other biological notes con- 

 cerning it. Ent. News, xxviii, pp. 174-183, pi. XIII. 



