PLATE 3 



EXPLANATION OF FIGURES 



19 Longitudinal section of follicle of testis from Acridium granulatus. A 

 cyst of the seventh generation secondary spermatogonia (sp'go. 7) contains 64 

 cells; one of the eighth generation secondary spermatogonia {sp'go. 8), 128 cells; 

 cysts of the first spermatocyte generation {sp'cij.), 256 cells each; and cysts of 

 spermatozoa (sp'zo.), 1024 cells each. 



20 Longitudinal section of follicle of testis of Dissosteria Carolina. After 

 Davis ('08). 



21 Testis of Acridium. 



22 Testis of Dissosteira Carolina. From Snodgrass's 'Anatomy of the 

 Carolina Locust.' 



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