608 DR. J. MURIE ON A NEW TAPEWORM. [June 23, 
left lung presented a slight incision or was very partially divided into 
two lobes. 
The tongue, as is usual in the Seals, was terminally split rather than 
forked. The dorsal papillee were very numerous and of small size. 
The cesophagus had a length of 16 inches. As is the case in the 
Common Seal, the rather capacious stomach was cylindroid, and 
with the pyloric bend sharp; its long diameter was 11 inches. 
The small intestines from the pylorus to the cecum measured 
41 feet 5 inches, with an average diameter of } an inch. As in 
Phoca generally, the czecal diverticulum is simple, short, and wide. 
Including 3 an inch of czecum, the great intestines had a length of 
184 inches ; their diameter, ? of an inch at the cecal end, gradually 
enlarges towards the vent, and is 1j inch attherectum. The entire 
alimentary tube at this stage of growth is therefore about 45 feet 
23 inches long. 
The deeply divided liver precisely corresponds as to disposition, 
number, and size of the lobes, with those of the Ringed Seal (P. 
fetida, Mill.) and to the Common Seal (P. vitulina); namely, there 
are five large elongate taper-pointed hepatic divisions, and two lobules 
—in all, seven lobes. The two to the left are the homologues of the 
left half of human anatomy ; and the right half is represented by the 
three remaining large lobes; of these three the mesial two are 
equivalent to Professor Owen’s cystic lobe. The Spigelian and cau- 
date lobules are relatively small. The common bile-duct, derived 
from the pyriform gall-bladder, opens into the intestine an inch dis- 
tant from the pyloric orifice. 
The kidneys are compound or acinate; and externally large veins 
ramify superficially upon the renal capsule, as is the case in the Com- 
mon Seal. 
The generative organs comport to the type of Pinnipedia. The 
prostate gland is of moderate size ; Cowper’s glands are absent. 
In passing, I may note that the vertebral formula is :—7 cervical, 
15 dorsal, 6 lumbar, 4 sacral, and 13 caudal segments, or a total 
=45 vertebree. Terminal caudal elements are often lost in museum 
skeletons ; but in this case they were counted whilst attached by in- 
tervertebral substance and ligament. 
7. On a probably new Species of Tenia from the Rhinoceros. 
By James Murs, M.D., F.L.S., F.G.S., &c., late Pro- 
sector to the Society. 
The Cestoida, abundantly numerous among the ruminant section 
of the Artiodactyla, are by no means so common or well known in 
the non-ruminant division of that group. Regarding the Perisso- 
dactyla, its few families and genera have as yet not yielded many 
varieties of these Entozoa. 
In the very lucid and capitally illustrated ‘Introduction to Hel- 
