BY T. THOMSON FLYNN. 



877 



sectioned. The portions seen, however, showed the median 

 septum, and the two lateral septa, with a semicircular mass of 

 erectile tissue arranged round the latter, much as is found in 

 the adult Phascolarclos. 



Fig. 6. 



Fig. 7. 



ii. On the Anatomy of the Genital Organs of an Adult 

 Female Sarcophilus sataxicvs, with three advanced 

 Pouch- Young. 



External appearance of the Genital Organs. — The genital 

 organs are shown in Fig. 1. They comprise two ovaries, two 

 Fallopian tubes, two uteri, the median vaginal apparatus, two 

 vaginae, and a long urogenital sinus. A general glance at Fig.l, 

 and a comparison of the figure with Hill's drawing of the genital 

 organs of /'er«meZes(3,Fig. 1) would give rise to the impression 

 that in Sarcophihis, as in Ferameles, there is present an elongated 

 strand of tissue, the so-called urogenital strand. But this is not 

 so. Sections show that the long cylindrical mass of tissue(w.s.) 

 seen in Fig.l, is almost entirely the wall of an elongated 

 urogenital sinus, only the most proximal portion of this tissue 

 representing the urogenital strand. But there is an important 

 point of agreement hetween the genital organs of Peranieles and 

 Sarcophilus, which needs to be fully emphasised; in both we 

 have, in the adult, a condition of the genital organs characterised 

 by Hill(3) as " persistently embryonic," inasmuch as the posterior 



