56 



FRANK R. LILLIE. 



out of which the free-martin gonad is entirely composed (cf. 

 Chapin, 1917; Willier, 1921). 



Fig. 3. Anatomy of the urinogenital system of the free-martin of Case 78, 

 32 cm. long. Described in the text. Greatest length, 32 cm. A. The entire 

 system. B. The urinogenital cord has been cut across in front of the seminal 

 vesicles and turned over anteriorly so as to expose the dorsal surface. 1. 

 The exceedingly minute gonad; 2. Cornua uteri; 3. Gubernacula invaginated 

 into the body cavity; 4. Cut end of umbilical artery; 5. Wolffian ducts; 6. 

 Very slender seminal vesicles. Natural size. 



