484 Zoological Society, 



**The heart was compressed and pointed; its length was two 

 inches. 



" The aorta gave off as usual 3 branches for the supply of the an- 

 terior portion of the body. The first or arteria Innominata, however, 

 almost immediately divided into carotid and subclavian. The right 

 auricle presented at its upper part a semilunar notch fitting to the 

 base of the aorta, two points rising up, one on each side of the aorta, 

 as auricular appendages. Into the upper part of the auricle just be- 

 hind the right appendix entered the right vena cava superior ; and 

 into the inferior portion of the auricle close to the entrance of the 

 vena cava inferior, entered the left vena cava superior. The vena 

 azygos running up on the left side of the aorta, entered the left vena 

 cava superior an inch from its termination. This arrangement of 

 the vence cavce appears to be normal in the Marsupials, as Mr. Owen 

 has previously observed. 



*' Six coronary veins entered the right auricle round its junctional 

 margin with the ventricle. 



*• The auriculo-ventricular opening on the right was of moderate 

 size, with a simple valve, the edges of which were bound down by 

 the tendons of two distinct carnece columna ; a third fasciculus of 

 fleshy fibres, but very indistinct, were to the right of these, but they 

 could hardly be said to constitute a third carnea columna. The 

 right ventricle does not approach the apex of the heart by ^ of an 

 inch. No trace of foramen ovale. Pulmonary artery very wide, 

 dividing after a course of ^ an inch in two branches, a right and 

 left. Right ventricle very thin ; the left, very thick and firm. 



" Of the kidneys, the right was seated higher, nearly by its whole 

 length, than the left ; the lower end of the former and the upper end 

 of the latter being parallel. In shape, these organs were oval, and 

 but slightly compressed. Their pelvis was small, the papilla single 

 and obtuse; the cortical and cineritious layers very distinct. Length, 

 1 J of an inch ; breadth, f of an inch. 



"The penis, of small size and conical figure, was placed imme- 

 diately anterior to the anus ; it was slightly bifurcate, or rather had 

 two projecting papillte, one on each side of the urethral orifice. 

 Length of spongy portion, | of an inch. Bladder small, oval, and 

 much contracted. Testis, of the size of a horsebean. Total length 

 of vasa deferentia, 2| inches; their entrance was below and external 

 to the ureters, which opened as usual. Prostate small. Vesicula 

 seminales small; they entered § of an inch below the bladder, with 

 Cowper's glands, which were as large as a tare. 



" The thyroid glands were oval, compressed, and small; their co- 

 lour pale; they began at the 4th ring of the trachea from the thy- 

 roid cartilage, and extended to the 9th or 10th. 



" There was a round subzygomatic gland the size of a pea on the 

 masseter, and two others of the same character were placed on the 

 front of the neck, on the platysma myoides. 



" The submaxillary glands were thin and long, measuring 1 inch 

 in length. Their situation was as usual. 



" The parotid glands, very extensive but superficial, occupied the 



