THE AVAHI LEMURS. 95 
straight line with the incisor teeth. ‘Toothless space in front 
of upper jaw greater than in the other two genera. Dentition 
of the upper jaw,; zzc/sors small, the outer larger than the inner, 
set close to the canines and not at the inner edge of the tooth- 
less space ; canines vertically short; Azve-molars, with no inner 
cusp, but having a prominent outer cingulum (a character seen 
in no other species of Lemur); mo/ars, four-cusped. Lower 
jaw: zzcisors larger than in the two other genera, and less 
horizontal, the inner ones more slender than the outer. 
Anterior and posterior mo/ars, five-cusped. Hind margin of 
palate reaching to the middle of the median molar. Central 
bone of wrist wanting (of all Primates agreeing in this character 
only with Man, the Chimpanzees, the Gentle- and Sportive- 
Lemurs and the Endrina) ; fourth digit of the hands and feet 
longest. ‘Tail long. The small intestine not spirally coiled 
upon itself, but folded many times transversely. 
Hair long, woolly, dark Mouse-grey at base, reddish- 
brown in the middle, black at the tips. Face broad, entirely 
covered with short greyish-brown hairs ; nose-pad alone nude. 
Ears concealed and covered by rufous hair; pupil of eye 
very contractile, very narrow and linear during the day; 
across the forehead and over the eyes a transverse lunulate 
whitish band, margined anteriorly by a black band. Back 
greyish-brown, the nape darker ; a patch over the rump, and 
the base of the tail and buttocks white, washed with rufous ; 
back and inner side of thighs and round the arms whitish; a 
narrow fringe on the lower margin of arms and legs ashy-grey, 
washed with rufous ; fore-arm, hands and feet rusty-brown ; 
tail bright dark red, deepest at its extremity. Under side and 
inner surface of limbs grey, washed with rufous. Length of 
body, 12% inches ; tail, 1534 inches. 
