lemuridj: 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 Ah-. (J. 

 A. Shaw 1 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 L. macaco the male is black 

 and the female red. L. mongoz, L. collaris, and L. albifrons are 

 other well-known species. 



Hapalcmurr — 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. Mammae 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 cpiite nocturnal, and 

 lives chiefly among bamboos, subsisting on the young shoots. A 

 second species has been named H. simus, but it is doubtful if it is 

 more than a variety. 



Lepidolemw. 3 — Upper incisors absent or rudimentary. Muzzle 

 more elongated than in the last. No distinct os centrale in the 

 carpus. L. 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 Avith better developed premaxillae, containing a pair of small 

 styliform incisors, has been described by Peters i under the name 

 of Myxocebus caniceps. 



Subfamily Galaginse. — Dentition as in Lemurince, from which 

 the members of this subfamily are distinguished by the elongation 

 of the tarsus, caused by a peculiar modification of the calcaneum 

 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. 5 — Last upper premolar very much smaller than the 

 first molar, with only one external cusp. The animals included 



1 Proc. Zool. Soc. 1879, p. 132. - Gray, Proc. Zool. Hoc. 1870, p. 829. 



3 I. Geoffroy, Cat. Muz. Hist. Nat. Paris, p. 75 (1851). Amended from 

 Lepilemur. 4 Monatsb. Ak. Berlin, 1874, p. 690. 



5 Geoffroy, Ann. du Museum, vol. xix. p. 171 (1812). 



44 



