THE ENDRINAS. 107 



also in the foetus), but differing from that of the Apes, is placed 

 between the gullet and windpipe, communicating with the latter 

 by an orifice : main arteries of the fore- and hind-Hmbs not 

 broken up into a rete mirahile of small parallel vessels, as in 

 many species of Lemurs. 



Face naked, sometimes blackish, generally dark grey ; lips 

 downy ; head, neck, back, shoulders, arms, and hands, deep 

 black ; fore-arms faintly washed with rufous ; a large patch, 

 widening from the middle of the back downwards to the lower 

 back, rump, and root of the tail pure white, washed with orange 

 or red ; a patch on each flank, pale, becoming rufous or grey- 

 ish-white, separated from the rump-spot by black bands con- 

 tinuing down the outer side of the inner face of the thighs, 

 and the front and inner sides of the legs ; thighs ashy-grey, 

 their upper two-thirds greyish, becoming black on the front, 

 and ashy-grey on the hinder surface, of the leg. Feet black ; 

 tail stumpy, fawn-colour, brownish-grey at the tip ; under side 

 rusty brown ; abdomen grey ; heel rufous. 



Many varieties of this species have been met with. Of these, 

 some have the top of the head and between the eyes greyish- 

 white, mixed here and there with black ; jaws and throat, grey ; 

 ears, neck, back and upper part of arms, black ; the fore-arms 

 grey ; the hands black ; a patch on the lower back ashy-grey ; 

 llanks bright rufous ; legs grey ; band on front of the thighs 

 black ; heel bright rufous. 



Other examples have a mark over each eyebrow, the fore- 

 limbs nearly to the hands, the hinder part of the thighs, the legs 

 from the knee to the ankle, and the whole under side iron- 

 grey ; the ankles and hind part of the heels white, yellow below. 

 {Indris variegatus^ Gray.) 



All stages between the forms here described and complete 



