R A. E. Crew 



151 



13. RiDEVVOOD. K temporaria. In first year. Killed November. 

 Secondary sexual characters typically male. 



Right gonad. An ovo-testis having the appearance of an excep- 

 tionally large testis bearing a small pigmented excrescence antero- 

 externally. 



Left gonad. An ovo-testis with a 3-lobed ovary-portion situated 

 externally. 



Vasa efferentia as those of the normal male. 



Seminal vesicles present. 



MuUerian ducts well-developed, more especially the left. 



No sections were made. 



14. Crew. (4.) R. temporaria. Adult. Killed May. Secondary 

 sexual characters typically male. 



Right gonad. An ovo-testis which save for a small pigmented pit 

 upon the outer border had the appearance of a testis. 



Left gonad. An ovo-testis having the appearance of an irregularly 

 shaped testis which bore along its outer border a prominent pigmented 

 crest, jet-black in colour and consisting of four spherical nodules in its 

 anterior part. 



Fig. 13. 



Fig. 14. 



Vasa efferentia on both sides as those of the normal male. 

 Seminal vesicles well-defined. 

 Mullerian ducts moderately well-developed. 



On section, the greater part of the right gonad had the structure of 

 normal testis. Sections involving the pigmented pit showed the presence 



