1863.] dr. j. e. gray on the species of lemurotds. 139 



8. Prosimia albimana. B.M. 



Lemur inongoz, Audeb. Makis, t. I. 



Leimir albimana, Geoff. 



Fur dark iron-grey, with a black streak on the hinder part of the 

 back, and a black broad crescent at the base of the tail ; nose, outer 

 base of the ears, hands, chin, chest, and beneath white ; temples 

 and sides of the throat rufous ; spot on forehead and underpart of 

 orbit blackish. 



Hab. Madagascar {Brit. Mus.). 



9. Prosimia anjuanensis. B.M. 



Lemur anjuanensis, Geoff. 



Fur reddish iron-grey ; chin and beneath paler ; nose, head, nape, 

 front of the body, and shoulders blackish grey ; temples and outer 

 base of the ears black ; a large I'oundish spot on the side of the neck, 

 under the ears, rufous ; tail blackish-washed. 



Hab. Madagascar {Brit. Mus.). 



Easily known from P. collaris by the small size of the rufous spot 

 on the side of the neck, and the black nose and head. 



10. Prosimia collaris. B.M. 



Lemur collaris, Geoff. 



Fur dark or pale iron-grey ; nose, outer base of the ears, chin, 

 throat, and beneath white ; orbits, temples, side of the face, chin, 

 and sides of the throat rufous ; tail iron-grey, rufous at the base. 



Hab. Madagascar {Brit. Mus.). 



This species diffeis from P. albimana in the rufous spot on the 

 side of the face being more extended, and the hands and feet are 

 dark iron-grey. There is no dorsal stripe nor crescent at the base 

 of the tail. 



Prosimia rufifrons is easily known by the two small white stripes 

 across each side of the rump. 



P. albifrons by the white back of the head. 



P. melanocephala by the black head and yellowish fur. 



P. xanthomystax by the indistinct broad black stripe down the 

 back. 



P. albimana by the black dorsal streak and crescent at the base 

 of the tail, and white feet. 



P. coronata and P. collaris by the rufous band across the fore- 

 head. 



b. Feet elongate ; tarsus longer than the metacarpus ; ears exposed, 



nakedish. 



6. Otogale. 



Ears large, membranaceous, contractile backwards. Cutting teeth 

 '■^ ; upper slender, equal, nearly in the same line ; lower close to- 

 gether, and projecting horizontally forwards. Skull rather elongate, 

 broad. Anterior false grinder elongate, erect, conical, compressed. 



