Fig. ii. Vagina and vulva of a 2-1 m. Fin whale foetus dissected to show the relation of the parts. The 



vagina has been opened along the mid-ventral line, and the clitoris, cut longitudinally, has been laid over 



on the right side of the vulva together with the urinary opening. 



a. Vagina. 



b. Urinary duct. 



c. Grooves at the entrance to the vagina. 



d. Constriction at the entrance to the vagina. 



e. Vulva. 



/. Sphincter vaginae muscle. 



g. Ischio-cavernosus or erector clitoridis muscle. 



h. Interpelvic ligament. 



i. Levator ani muscle. 



j. Rectum. 



k. Ischio-caudalis muscle. 



/. Clitoris. 



m. Corpus cavernosum clitoridis. 



n. Crus corpus cavernosi clitoridis. 



o. Bulbus clitoridis. 



p. Urinary aperture. 



5-2 



