LIFE HISTORY OF HYDROUS ( H YDROPHILUS ) TRIANGULARIS. 



37 



Haupt, H. 



1907. Was mich eine Hydrophilus (Hydrous-) Larve lehrte. Wochenschrift fiir Aquarienkunde, 



Bd. 4, pp. 326-328. Braunschweig. 

 1909. Zur Biologic der Hydrous- (Hydrophilus-) Larve. Zeitschrift fiir Naturwissenschaften, Bd. 



81, pp. 301-304. Leipzig. 

 Hentschel, Ernst. 



1909. Das Leben des Siisswassers. Eine gemeinverstandliche Biologie. IV+336 pp., 299 fig., 

 17 Taf. Munchen. [Hydrous, p. 236.] 

 Laker, Abbott G. 



1881. The cocoons of Hydrophilus piceus and Hydrobius fusdpes. The Entomologist, vol. 14, 

 pp. 82-84. London. 

 Lyonet, Pierre. 



1832. Recherches sur I'anatomie et les metamorphoses de differentes especes d'insectes, ouvrage 

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 iv+580pp. Paris. [Scarabee aquatique, pp. 127-151.] 

 Mabbott, Douglas C. 



1920. Food habits of seven species of American shoal-water ducks. U. S. Department of Agri- 

 culture, Bulletin No. 862, 70 pp., VII pis. Washington. 

 Matheson, Robert. 



1914. Notes on Hydrophilus triangularis Say. The Canadian Entomologist, Vol. XLVI, pp. 

 337-343, PI. 22, figs. 29-31. London, Canada. 

 McAtee, W. L., and F. E. L. Beal. 



1912. Some common game, aquatic, and rapacious birds in relation to man. U. S. Department of 



Agricultiu-e, Farmers' Bulletin No. 497, 30 pp., 14 figs. Washington. 

 Megusar, Franz. 



1909. Lebensgeschichte der Hydrophiliden. Verhandlungen der k. k. zoologisch-botanischen 

 Gesellschaft in Wien, Bd. LIX, pp. 278-287. 



MlALL, L. C. 



1895. The natural history of aquatic insects. ix-f395 pp., 116 figs. Macmillan & Co., London 

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 MiGER, Felix, et Lancret. 



1804. Sur les larves Hydrophyles et Dytiques. Bulletin, Paris Soci^te philomatique, T. 3, pp. 

 229-234. 



1809. Memoires sur les larves des insectes Larves des insectes col^opteres aquatiques. Annales 

 du Museum d'Histoire naturelle, T. 14, pp. 441-459. Paris. 

 Needham, James G. 



1904. Beetle drift on Lake Michigan. The Canadian Entomologist, Vol. XXXVI, pp. 294-296. 

 London, Canada. 

 NiTzscH, Christian L. 



1811. tiber das Athmen der Hydrophilen. Archiv fiir die Physiologic von Reil, Bd. 10, pp. 

 440-458, PI. 9. 

 Orchymont, a. d'. 



1913. Contribution a I'etude des larves hydrophilides. Annales de Biologic Lacustrc, T. 6, pp. 



173-214. Bruxellcs. 

 Planet, Louis. 



1891. Devcloppemcnt de I'Hydrophilc brun (Hydrophilus piceus). Hydrophilus piceus. Meta- 

 morphoses. Lc Naturaliste; revue illustree des sciences naturelles, 2^ S^rie, 13® Ann^e, 

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 Poujade, G. a. 



1901. Sur V Hydrophilus piceus Linn. Bulletin de la Societe cntomologique de France, T. 70, pp. 



229-230. Paris. 



1902. Note sur V Hydrophilus piceus. Ibid., T. 71, pp. 206, 219, 238. 

 Reitter, Edmund. 



1909. Coleoptcra. In Die Siisswasserfauna Dcutschlands, hrsg. von A. Braucr. iv+235 pp. 

 Jena. [Hydrophilidse, p. 51.] 



