FEMALE.--Centre of nose black; sides of nose, chin, cheeks, including the eyes, ears, sides of throat, iron-grey, slightly flushed at the lower side of the neck under the ears with reddish-orange. Specimens from the island of Mayotte (_L. mayottensis_, Schl.) differ from _L. collaris_ in having a blackish spot over the root of the tail. {73}THE RUFOUS LEMUR. LEMUR RUFUS. Has a yellowish-white frontal band and whiskers. THE BLACK-FACED LEMUR. LEMUR NIGRIFRONS. Has a brownish-black band over the forehead, including the eyes; muzzle, patch on top of head including the ears, the side of the head below the ears, sub-auricular tufts, throat and under surface, grey. THE WHITE-FACED LEMUR. LEMUR ALBIFRONS. Forehead, top of head, ears, throat, and chest white. Pure albino varieties are also quite common. DISTRIBUTION.--The Mongoose Lemur with its numerous varieties is found throughout the island of Madagascar, in Mayotte, and in Anjuan or Johanna Island, one of the Comoro group. HABITS.--Gregarious and diurnal, feeding on fruits, insects, and small animals. IV. SCLATER'S LEMUR. LEMUR NIGERRIMUS. _Lemur nigerrimus_, Scl., P. Z. S., 1880, p. 451, figs. 1 and 2; Milne-Edw. et Grandid., H. N. Madag., Mamm., pls. 154, 155 (1890). _Lemur macaco_ (nec L.), Scl., P. Z. S., 1878, p. 1016. _Prosimia rufipes_, Gray, Ann. N. H., 1871, p. 339 (female). CHARACTERS.--Face covered with short hair; ears nude and without tufts; nose-pad and lower lips nude. Similar to _L. macaco_, but larger and more intensely black, with a raised crest of upstanding hair on the head, formed by the longer fur of the body terminating arcuately on the forehead. External ears pinkish flesh-colour. Eyes blue, turning to green. Length, 16 inches; tail, 20 inches. {74}FEMALE.--(_Prosimia rufipes_ of Gray) Brown; eyes brownish-yellow. DISTRIBUTION.--Cap d'Ambra, N. Madagascar. Nothing is known of the habits of this species. V. THE WHITE-HANDED LEMUR. LEMUR ALBIMANUS. _Le Maki aux pieds blancs_, Audebert, H. N. Singes, p. 10, pl. 1 (1797: male). _Lemur albimanus_, Is. Geoffr., Ann. Mus., xix., pp. 161-169 (1812); Milne-Edw. et Grandid., Hist. Nat. Madag., Mamm., Atlas, pls. 156, 157, 162-164, 165, figs, 1 and 2 (1890). _Lemur mongoz_ (nec L.), Schl., Mus. Pays. Bas., vii., p. 312 (1876, pt.). CHARACTERS.--Nose sharp and Dog-like; eyes oblique; ears, except the central portion, haired.