500 



Gyrinidae 

 Davis, William T. 



1899. Whirligig-beetles taking a sun-bath. Journ. N. Y. Ent 

 Soc, 7: 322. 



Fall. H. C. 



1923. The North American species of Gyrinus. Trans. Amer. 

 Ent. Soc, 47 : 369-306, pi. 



Hellins, J. 



1881. Ichneumonidae infesting larvae of Gvriniis natator. Ent. 



Mo. Mag., (1) 18: 88-89. 



Kolbe, H. 



1880. Zur Lebensweise des OrectochUus villosus Milll. Deutsche 

 Ent. Zeitsch., 24 : 228. 



Meinert, Fr. 



1895. Gyrin-lavernes niundbygning. Ent. Meddelel., 5 : 139-117. 



NOWROJEE, D. 



1912. Life-histories of Indian insects. II. Some aquatic Rhyn- 

 chota and Coleoptera. Mem. Dept. Agr. in India. Ent. ser., 

 2: 165-191, col. pis. 20-26. 



SCHI0DTE, J. C. 



De metamorphosi eleutheratorum observationes. 

 1861-62. I. Naturh. Tidsskr., 1 : 193-232, pis. 3-10. 

 1861. II. Idem, 3: 131-234, pis. 1-12. 



1873. VI. Idem, 6: 165-326, pis. 1-9. 



Weiss, Harry B. 



1914. Notes on the positive hydrotropism of Gerris margiuatus 

 Sa^ and Dincutes assimi'lis Aube. Can. Ent., 46 : 33-34. 



Wickham, H. F. 



1893. Description of the early stages of several North American 

 Coleoptera. Bui. State Lab. Nat. Hist., Iowa, 2: 330-344, 

 pi. 9. 1893. 



h\t)rophilidae 



Baker, Walter F. 



1894. Hydrohius fuscipcs; notes on its life-histor>', larval an- 

 atomy, etc. Naturalist, 19: 327-333, 9 figs. 



BoviNG, Adam G. 



1914. Notes on the larva of Hydroscaplui and some other aquat- 

 ic larvae from Arizona. Proc. Ent. Soc. Washington, 16 : 



169-174, 2 figs., pis. 17-18. 



