LEMURIDE 689 
Fig. 328), of a delicate gray colour, and with a long tail marked 
with alternating rings of black and white. This is said by Mr. G. 
A. Shaw! to be an exception to all the other Lemurs in not being 
arboreal, but living chiefly among rocks and bushes. Pollen, how- 
ever, says that it inhabits the forests of the south-west parts of 
Madagascar, living, like its congeners, in considerable troops, and 
not differing from them in its habits. He adds that it is extremely 
gentle, and active and graceful in its movements, and utters at 
intervals a little plaintive cry like that of a domestic cat. All the 
others have the tail of uniform colour. The largest species is L. 
varius, the Ruffed Lemur, sometimes black and white, and some- 
times reddish-brown, the variation apparently not depending on 
sex or age, but on the individual. In ZL. macwco the male is black 
and the female red. LZ. mongoz, L. collarvis, and L. albifrons are 
other well-known species. 
Hapalemur.2—Upper incisors very small, subequal, separated 
widely in the middle line. Those of either side in contact with each 
other and with the canine, the posterior one being placed on the 
inside, and not in front of the latter. Muzzle very short and 
truncated. Mammez four. There is apparently but one species, 
H, griseus, smaller than any of the true Lemurs, of a dark gray 
colour, with round face and short ears. It is quite nocturnal, and 
lives chiefly among bamboos, subsisting on the young shoots. A 
second species has been named H. sinus, but it is doubtful if it is 
more than a variety. 
Lepidolemur.2—Upper incisors absent or rudimentary. Muzzle 
more elongated than in the last. No distinct os centrale in the 
carpus. JL. mustelinus is the best-known species. It has, at all 
events when adult, no upper incisors. It is rare, and like 
Hapalemur nocturnal in its habits. A second closely allied species, 
but with better developed premaxille, containing a pair of small 
styliform incisors, has been described by Peters* under the name 
of Myxoeebus caniceps. 
Subfamily Galagingze.—Dentition as in Lemuwrine, from which 
the members of this subfamily are distinguished by the elongation 
of the tarsus, caused by a peculiar modification of the caleaneum 
and the navicular, the distal portion of the former and the whole 
of the latter having the form of almost cylindrical rods placed side 
by side, while the other bones retain nearly their normal form and 
proportion. 
Chirogaleus.o—Last wpper premolar very much smaller than the 
first molar, with only one external cusp. The animals included 
1 Proc, Zool. Soc. 1879, p. 182. 2 Gray, Proc. Zool, Soc. 1870, p. 829. 
3 T. Geoffroy, Cat. Mus. Hist. Nat. Paris, p. 75 (1851). Amended from 
Lepilemur. + Monatsb. Ak. Berlin, 1874, p. 690. 
5 Geoffroy, dan. du Muséwin, vol. xix. p. 171 (1812). 
y> 
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