F. A. E. Crew 155 



The greater part of the ovary-portion was composed of polygonal masses 

 of pigment and hyperplastic connective-tissue. The cavities of the lobu- 

 lated ovary were obliterated by this pigment but the divisions of the 

 lobules were still distinct on section. There were ciliated cells upon the 

 peritoneum. 



Fig. 17. Fig. 18. Fig. 19. 



Sub-group 2. The testis was normal in appearance. None. 

 Grouj) D. Those cases in which, on inspection, both gonads were testes. 

 Sub-group 1. The testes were abnormal in appearance. 



19. Latter. R. temporaria. Adult. Killed September. Secondary 

 sexual characters typically male. 



Right gonad. A faintly pigmented testis smaller than usual. 



Left gonad. A faintly pigmented testis larger than usual and 

 irregular in shape. 



Seminal vesicles present. 



Miillerian ducts only slightly developed, not convoluted, and solid in 

 their anterior portions, but expanded in their posterior portions. 



On section, ova were found in both testes, some within and others 

 between the seminal tubules. Besides these ova degenerate cell-masses 

 were found in similar situations. 



20. MiTROPHANOW. R. esculenta. Young. Secondary sexual cha- 

 acters male. 



Right gonad, A testis much smaller than usual. 

 Left gonad. A testis smaller than usual. 

 Seminal vesicles present and well-developed. 



