30 



Simmons,, S. ¥. 1939 Digestive enzymes of the larva of 



the cattle grub Hypoderma lineatum (De Villiers). Ann. 



Entomol. Soc. Am. , 32, 621-627- 

 Stammer, H. J. 1929 Die Bakteriensymbiose der Trypetiden 



(Diptera). Z. , Morphol. 5kol. Tiere (Abt. A. Z. wiss 



Biol. ) 15, U81-523. 

 Steinhaus, E. A. 19^-0 The microbiology of insects , Bact, 



Rev., k, 17-57. 

 Steinhaus, E. A. 19^+1 A study of the bacteria associated 



with thirty species of insects. J. Bact. , k2, 757-790, 

 Steinhaus, E. A. 19^2 The microbial flora of the Rocky 



Mountain wood tick, Dermacentor andersom Stiles. 



J. Bact. , in press. 

 Steinhaus, E= A. 19^-2 A bacterium associated with the 



louse fly, Lipoptena depressa . J. Parasitol. , In press. 

 Tatum, E. L. 1939 Development of eye -colors in Drosophila 



Bacterial synthesis of V"*" hormone. Proc. Natl, Acad. 



Sci. U. S., 25, ^86-490. 

 Thorpe, W. A. 1930 The biology of the petroleum fly 



(Psilopa petrolii, Coq. ), Trans, Entomol, Soc. London, 



78, 331-3^. 

 Torrey, J. C, 1912 Numbers and types of bacteria carried 



by city flies. J. Infect. Diseases, 10, l66-l67o 

 Trager, W. 1935a The culture of the mosquito larvae 



free from living microorganisms. Am. J. Hyg. , 22, 18-25. 

 Trager, ¥. 1935b On the nutritional requirements of 



mosquito larvae ( Aedes aegypti ) . Am. J. Hyg., 22, 



1+75-^93. 

 Trager, ¥. , Miller, D. K. , and Rhoads, C. P. 1938 The 



absence from the urine of pernicious anemia patients of 



a mosquito growth factor present in normal urine. J. 



Expt. Med. 67, k69-kSO. 

 We inland, E. 1907 Weitere Beobachtungen an Calliphora, 



IV. "Ober chemische Momente bei der Metamorphose (und 



Entwicklung). Z. Biol., k%, ^+86-^95. 

 Weinland, E. 1908 Uber die Bildung von Fett aus eiweis- 



sartiger Substanz im Brei der Calliphoralarven, Z, 



Biol., 51, 197-278. 

 Werner, E. I926 Die Ernahrung der Larve von Potosia 



cuprea , Frb. (Cetonia floricola Hbst. ) Ein Beitrag 



zum Problem der Celluloseverdauung bei Insectenlarven. 



Z. Morphol. Okol. Tiere (Abt. A. Z. wiss Biol, ) 6, 



150-206. 

 White, G. F. I906 The bacteria of the apiary with special 



reference to bee diseases. U. S. Dept. Agr. , Bur. 



Entomol., Tech. Bull., No. lb, 50 pp. 

 White, G. F. 1912 The cause of European foulbrood. U. S. 



Dept. Agr. Bur. Ent, Cir. 157, 15 pp. 



