BY JAS. P. HILL. 81 



13.— Fletcher, J. J. " Ou some Points in the Anatomy of the Urogenital 

 Organs in Females of certain species of Kangaroos." Part i. 

 P.L.S.N.S.W. Vol. vii. 18S2 ; Part ii. Ibid. Vol. viii. 18S3. 



14.— Home, E. " Some Observations of the Mode of Generation of the 

 Kangaroo, with a particular Description of the Organs them- 

 selves." Phil. Trans. 1795. 



EXPLANATION OF PLATES. 



Reference letters. 



a. vag. c. Anterior forwardly directed portion of lateral vaginal canal. 

 III. Bladder. hd. lig. Broad ligament. cl. Cloaca. c. m. v. Common 

 median vagina, c.t. Connective tissue between lateral vaginal canals. 

 fm. Fimbriated opening of Fallopian tube. f.t. Fallopian tube. I. vag. c. 

 Lateral vaginal canal, m.v.c. Median vaginal canal, o.u.s. Opening of 

 urogenital sinus, op. Opening of anterior portion of lateral vaginal canal 

 into vaginal ctecum. ov. Ovary, pv. p. Pssudo-vaginal passage. t-ect. 

 Rectum. u.s. Urogenital strand. ur. Ureter. ureth. Urethra. ut. 

 Body of uterus. ut.p.f. Utero-pelvic fold of broad ligament. ut.7i. 

 Uterine neck, rag.r. Vaginal caeca, iks.v. Vesical artery and vein. 



N.B. — With the exception of figs. 1 and 2, the figures are reproductions 

 from photo-micrographs of transverse sections. 



Plate i. 



Fig. 1.— Urogenital organs of P. ohesitJa, seen from the dorsal aspect. The 

 cloaca has been opened to show the opening of the urogenital 

 sinus (o.u.s.), and the peritoneal pouches have been drawn for- 

 wards to expose the ovaries. ( x 1.) 



Fig. 2. — Urogenital organs of P. obesula. Dissection from dorsal aspect. 

 X. Commencement of anterior forwardly directed portion of 

 lateral vaginal canal. ( x I). 



Figs. 3-8, Plates ii.-iv. — Trans, sections through the genital organs of virgin 

 P. na-^uta. For approximate positions of sections, see text-fig. 

 1, p. 52, and for description, see text, p. 53. 



Fig. 9, Plate v. — Trans, section through the clitoris, showing the median 

 septum (m.v.), the opening of the clitoris duct {c.d.) on one side, 

 and the erectile tissue [e.t.) 



Fig. 10, Plate v., and Figs. 11-12, Plate vi.— Trans, sections through 

 median vaginal apparatus of P. ohesida with two 17-5 mm. 

 young. 

 6 



