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the right 3 lines ; the aorta of large calibre, and its coats thick. Lungs, 
the right four-lobed, the left three- ; weight 26 oz. Trachea very large. 
Liver seven-lobed ; weight 21 oz. Bile of a dark yellow colour. Gall- 
bladder of moderate size. Spleen about 500 grs. in weight ; long, 
lax, thin and narrow, as in all the Carnaria. It was in the usual 
situation in this order of animals, viz. on the left of the stomach, to 
which it was attached by a wide mesenteric fold; the splenic artery 
and vein long; no valves in the latter. Pancreas small and elon- 
gated. Kidney oblong, less concave on its inner side than usual. 
The stomach of moderate size, and shaped like that of the dog; 
length 12 inches ; this organ with the cesophagus measured 12 feet 
6 inches ; the caecum, which was in 24 spiral folds like that of the 
dog, when unfolded was 5 inches in length ; the colon and rectum 
1 foot 10 inches ; total, 14 feet 9 inches. The cecal valve strong 
and distinct. The alimentary canal was too much decomposed to 
allow of my making a microscopical examination of it, but its struc- 
ture appeared to resemble that of the Dog. 
The ribs of the Hyzna are 15 ; those of the Lycaon 13, as in the 
Dog, Wolf and Fox. The teeth of the Hyzna, judging from two 
skulls in the Museum of the College of Surgeons, are, 4 incisors above, 
6 below, 10 molars above, 12 below, canines 4, =36. In the skull of 
the Striped Hyzena 10 molars in each jaw (one specimen), and in 
some fossil jaws of this animal the number of molars is less than 
above quoted ; but much, of course, will depend upon the age of the 
animal. In the Pointer, Blood-hound, Dingo, and other dogs, I 
found 12 molars above and 14 below, the canines being 4 and the 
incisors 12. The same with the Wolf and Fox. 
The only record I can find of the dissection of a Hyzena is one fur- 
nished me by Professor Quekett, and in this animal (30 years old) 
the alimentary canal measured 39 feet 54 inches. The account is 
copied from Professor Quekett’s notes. I was at first inclined to 
suppose that the copyist had made some mistake, the length men- 
tioned being very great for a carnivorous animal. Professor Quekett 
suggested “that the large quantity of phosphate of lime taken by 
the hyzena might explain the anomaly.” 
On referring, however, to the notes of my dissections of four dogs, 
in which I carefully measured the alimentary canal of all, the above 
statement does not appear to be so improbable :— 
Small Terrier, alimentary canal 7 feet 4 inches. 
Small Terrier (young), 7 feet. 
Blood-hound, 21 feet ; including large intestines, 2 feet 2 inches. 
Large Mastiff (old), weighing 104 lbs., 31 feet; including large 
intestines, 3 feet. 
Common Fox, 10 feet 6 inches. 
Young Indian Wolf (four months old), 6 feet 1 inch. 
So that, looking to the ribs, teeth, cecum, length of alimentary 
canal, and general form of the viscera, this animal must be classed 
with the Dogs, and not with the Hyzenas. 
