432 



FRANK R. LILLIE 



Fig. 10 Normal male 1U.4 cm. lung, from two-sexed pair 40. X Ti- Note that 

 the gubernaculum is well formed on the left side, but not yet on the right. 1, kid- 

 ney; 2, testis; 3, Wolffian ducts; 4, inguinal fold; 5, left gubernaculum; 6, scrotal 

 sacs; 7, teats; 8, penial tube; 9, urinogenital sinus; 10, umbilical arteries; 11, 

 umbilical veins; 12. imibilical cord; 13, anus. 



