112 



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 columns ; 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 oi 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 layei's very distinct. Length, 

 1|- of an inch ; breadth, f of an inch. 



"T\iG penis, of small size and conical figure, was placed imme- 

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

 two projecting papilla, 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 

 oi vastt deferentia, 2-^ inches; their entrance was below and external 

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

 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 

 usual situation ; the duct passed over the masseter, and entered op- 

 posite the 3rd molar, anterior to the edge of the buccinator. 



" The sterno-cleido-mastoideus was attached not only to the mas- 

 toid process, but also to the whole extent of the occipital ridge ; it 

 consisted of two portions arising as usual, from clavicle and ster- 

 num. 



" The tongue was thick at its base, which rose abruptly from a 

 deep furrow surrounding its root ; the distance from its root to the 

 epiglottis § of an inch. Its form was narrow, equal, and rounded at 

 the tip ; its surface was velvety, and one large central papilla was 



* Proceedings of Zool. Soc. April 10, 1832, p. 72. 



