BY JAS. P. HILL. 1 



There open into the dorsal corners of the urogenital sinus, 

 slightly behind the opening of the urethra, the ducts of two large 

 branching alveolar glands with muscular and fibrous trabeculfe. 

 The glands somewhat resemble the human prostate gland and 

 are not sharply marked off from each other. They lie partly 

 imbedded in the voluntary musculature investing the posterior 

 end of the urogenital strand, ventro-laterally to the urethra. 



Cloaca. — The cloaca is a fairly large chamber having in large 

 specimens a maximum depth of 9 mm. In some cases it is dis- 

 tinctly marked off from the rectum by the fact that the ridges of 

 the latter terminate abruptly at the point of junction of the two, 

 but in other cases the limit is not so well defined. The lining of 

 the cloaca may be comparatively smooth, or in other cases thrown 

 into ridges. In its wall is the large cloacal sphincter muscle. 

 Imbedded ventro-laterally in the latter are two large oval so-called 

 anal glands. A fine duct passes from the posterior end of each 

 gland to open into the cloaca by a small aperture on its ventral 

 wall some distance within the margin of the opening. Each 

 gland is invested by a layer of non-striate muscle fibres, and in 

 section presents a sponge-like appearance consisting of a large 

 central lumen from which come oft' numerous glandular alveoli. 

 There also occur in the walls of the cloaca numbers of branched 

 tubular glands. 



Parturition. 



In my previous paper on the Placentation of Ferameles, I 

 described the condition of the genital organs in an immediately 

 post-partum stage of P. nasuta, and showed conclusively that the 

 young reached the exterior, by way of a median cleft-like passage 

 — which I termed the median pseudo-vaginal passage — situated 

 in the connective tissue between the lateral vaginal canals. At 

 the time of writing the above paper, however, I misinterpreted 

 what is herein described as the common median vagina as " a 

 posterior common portion of the two uteri (common uterine 

 canal)" and hence came to the erroneous conclusion that the 

 median pseudo-vaginal passage "has no connection whatever with 

 the lateral canals " and regarded the apparently anomalous mode 



