276 RiippelPs Neue Wirlelthiere. 
months, and twelve will compose the present series, so that we may 
expect its completion in January 1837- Six numbers are now be- 
fore us ; of these one is devoted to Mammalia, two to Birds, one to 
Reptiles, and two to Fishes. 
The first plate of the Mammalia represents a beautiful species 
of the rare African genus Colobus, C. guereza, Riipp. discovered in 
the wooded and marshy valleys of south and west Abyssinia, (in 
the provinces of Godjam and Kulla.) It is jetty black, white 
cheeks and throat, with a fringe of long white hair arising from the 
back and hanging down upon the sides, looking as if it were cover- 
ed with a long veil ; but we add the specific characters. 
Colobus guereza, Riip. Corpore, facie, sincipite, auchenio et cauda ad dimi- 
diam usque aterrimis; taenia frontali, regione temporali, parauchenio, mento, 
gutture et cingulo ab interscapulio ad primnam elongate, villis sericeis longis- 
simis, prsecordia hypochondria et lumbos obtegentibus candidissimis, niveis. 
Cauda parte posteriore albicans floccosa, callus analis colore nigro, albo limbato. 
Macacus gelada, Riipp. occupies plate second, a large species of 
ape. And under the description of this species, it is mentioned that 
the little lemur figured by R. Brown in his Illustrations of Zoology 
(t. 44,) which he had referred to Octolicnus Senagalensis, is quite a 
distinct species. Three species of antelope and a goat are also de- 
scribed. Ant. defassa, Riipp. Tab. 3, a species which has been alive 
for some time in the gardens of the Zoological Society, where it is 
named Ant. sing- sing. Ant. decula, Riipp. Tab. 4, very like Ant. 
scripta, but wanting the dorsal stripe, and some of the transverse 
ones on the hinder part of the back. Ant. beisa, Riipp. Tab. 5, a 
very fine species, and probably the milk-white antelope described by 
Pennant from a drawing made in Persia, and from which Pallas es- 
tablished his A. leucoryx. It is quite distinct, however, from the 
A. leucoryx of Lichtenstein, which comes from the Cape ; and, if 
these surmises should prove correct, the recovery of the species is 
very interesting. Ruppell obtained it living in small families dur- 
ing the rainy season, in the low moist valleys on the coast provinces 
of Massaua. 
A. beisa, Riipp Mas adultus. Antelope cornubus longis, rotundatis, tenui- 
bus, rectis, parte basali annulatis. Facies exalbida, vittis tribus ex fusco umbri- 
nis valde distincta, quarum una a fronte ad regionem nasalem lata, sed inter ocu- 
los angustior, altera a fronte per oculum adgenam, tertia a regione parotidea ad 
gulam producta. Ejusdem coloris sunt, taenia, a gula collo anteriore ad ster- 
num decendens, ubi divisa ad latera pectoris et abdominis decurrit, armilla an- 
tibracbii, et caudae apex comatus. Corporis colore isabellino, pectoris et abdo- 
minis albicante, juba cervicali et dorsali, rubiginosa. Fremina adulta differ t a 
mare juba cervicali et dorsali corporis colore. 
