416 BOWEN. 



LlTERATUTlE CiTED. 



Blackman, M. W. 



1905. The spermatogenesis of the myriapods. III. The 

 spermatogenesis of Scolopendra heros. Bull. Mus. Comp. 

 Zool. Harvard College, vol, 48. 



Bowen, R. H. 



1920. Studies on insect spermatogenesis. I. The history of 

 the cytoplasmic components of the sperm in Hemiptera. 

 Biol. Bull., vol. 39. 



1922a. Studies. II. The components of the spermatid and 

 their role in the formation of the sperm in Hemiptera. 

 Journ. Morph., vol. 36. 

 1922b. Studies. III. On the structure of the nebenkern in the 

 insect spermatid and the origin of nebenkern patterns. 

 Biol. Bull., vol. 42. 

 Faust, E. C. 



1913. Size dimorphism in adult spermatozoa of Anasa tristis. 

 Biol. Bull., vol. 25. 

 Holmgren, N. 



1901. Ueber den Bau der Hoden und die Spermatogenese von 

 Staphylimis. Anat. Anz., vol. 19. 

 Meves, F. 



1903. Ueber oligopyrene und apyrene Spermien und ueber ihre 

 Entstehung nach Beobachtungen an Paludina und 

 Pygaera. Arch. f. mik. Anat., vol. 61. 

 Montgomery, T. H. 



1898. The spermatogenesis of Pentatoma up to the formation 

 of the spermatid. Zool. Jahrb., Anat. u. Ont., vol. 12. 



1910. On the dimegalous sperm and chromosomal variation of 

 EuscMstiis, -with reference to chromosomal continuity. 

 Arch. f. Zellforsch., vol. 5. 



1911. The spermatogenesis of an Hemipteron, Euschistus. 

 Journ. Morph., vol. 22. 



Pantel, J., and de Sinety, R. 



1906. Les cellules de la lignee male chez le Notonecta glauca L. 

 La Cellule, vol. 23. 



Swingle, W. W. 



1921. The germ cells of anurans. I. The male sexual cycle of 

 Rana catesbeiana larvae. Journ. Exp. Zool., vol. 32. 



