1875.] MR. E.R. ALSTON ON THE GENUS ANOMALURUS. 93 
The stomach is perfectly simple and nearly oval, the cardiac and 
pyloric openings being near one another. The walls are very thin ; 
and the epithelial lining is smooth and perfectly uniform throughout. 
A very small external fold or pucker runs transversely across the 
lesser curvature. In d. fraseri the greatest diameter is 1°75 inch, 
the lesser about ‘80. 
The duodenum has the usual dilatation below the pylorus; the 
length of the small intestine in A. fraseri is 43°50 inches, and in 4. 
pelw 60 inches. 
The czecum is of considerable volume. In A. Jraseri its length is 
about 5 inches, and its greatest diameter *50; in the specimen 
examined of A. pelii its proportions were similar, but it was too 
greatly injured by shot to allow of exact measurement. In form and 
structure it is very different from that of the Squirrels, and, indeed, 
from that of any of the Glires Simplicidentati with which I am 
acquainted. It is at first continuous with the colon, irregularly 
coiled on itself, and sacculated almost to its end by an internal spiral 
fold, with a free inner edge, as in the Hares; this fold is nearly 
regular and continuous, but here and there it is interrupted. The 
extremity is very narrow, perfectly simple, and abruptly reflected on 
itself. In the figure the cecum is shown uncoiled and extended, in 
which condition its structure is more plainly shown than when it is 
in its natural convolutions. 
The colon is at first marked by the inner fold continued from the 
ceecum; its first loop after leaving the latter is longer than the 
second. The length of the large intestine from czecum to anus is in 
A. fraseri about 16 inches, in A. pelii 47 inches, making the whole 
length of the intestine about 60 inches in the former and 107 inches 
in the latter, or rather more than jive times the length of the head 
and body in each case. 
Fig. 3. 
Liver of A. fraseri, natural size. 
LL, left lateral lobe; uc, left central; Ru, right lateral; rc, right central; 
8, Spigelian ; c, caudate lobe. 
