Zoological Society. 221 
Criceromys Gamsianus. Cri. magnitudine corporis duplo, vel 
plus, majore quam in Mure decumano: colore fere eodem : auri- 
bus mediocribus, pilis minutis vestitis ; caudd corpus cum capite 
equante ; pedibus mediocre parvis ; vellere brevi, adpresso, et sub- 
rigido ; colore cinerescenti-fusco ; pedibus partibusque inferioribus 
sordide albis ; caudd ad basin, pilis intense fuscis, ad apicem, albis, 
obsitd. 
unc. lin. 
Longitudo ab apice rostri ad caude basin ........ 16 O 
Der anTis <i e ss > a 
Ree aS MO MOIENONE Fee) Cees ee es 2° 6 
DE ee eee BS eS 15 Sees oi ie | 
MEM Ue es tiie Sey ss CES aces 15 O 
The Gambia Pouched-Rat is about double the size of the common 
Rat (Mus decumanus); in its colouring and proportions it greatly 
resembles that animal ; the fur is rather harsher, and more scanty : 
the general colour of the upper parts of the body is a trifle paler 
than in Mus decumanus. ‘lhe head is tolerably long, and pointed; 
the ears are of moderate size and rounded form; the feet are of mo- 
derate size; the tail is nearly equal to the head and body in length, 
thick at the base, covered with small adpressed harsh hairs ; but these 
are not sufficiently numerous to hide the scales ; about one third of the 
tail at the base is of a deep brown colour, the hairs covering the re- 
maining portion are pure white, and the skin itself has evidently 
been of a paler hue than on the basal part of the tail. The fur on 
the body is somewhat adpressed, and the hairs are glossy on the back ; 
they are of an ashy-gray colour at the base; the apical half of each 
is brownish-yellow, but at the points many of them are brownish; 
many longer hairs intermixed with the ordinary fur of the back are 
almost entirely of a brownish-black colour. ‘The whole of the under 
parts of the head and body and inner side of the limbs are white ; 
the hairs on the belly are rather scanty,.and of an uniform colour to 
the root: the fore feet are whitish, and the tarsi are white, but 
clouded with brown in the middle. The ears are but sparingly 
clothed with short hairs, which on the inner side are whitish, and on 
the outer brown. 
January 14 and 28th, 1840.—William Yarrell, Esq., Vice-Presi- 
dent, in the Chair. 
Mr. Ogilby read his paper entitled ‘ A Monograph of the Hollow- 
horned Ruminants,’ of which the following is an abstract :— 
“In revising the history of the Ruminantia,” says Mr. Ogilby, 
“the zoologist who, like myself, has made a special study of these 
animals, must be forcibly struck with the confusion of synonyms, the 
carelessness and inaccuracy of description, the vague and indefinite 
limits of the generic and subgeneric groups, the trivial and confess- 
edly empirical principles of classification, and, as a consequence, the 
great number of nominal species, and the general disorder which 
still prevail in this department of Mammalogy.” He proceeds to 
show that the views of the modern writers on this subject are no 
