CHARACTERS.--Very similar to _C. milii_, but distinguished by the far less woolly and more silky fur; face pointed; ears rounded, somewhat large, the outside and half the inside haired; lips flesh-colour. Upper side rather light brownish (almost reddish) grey; upper side of tail darker; tips of hair silvery, but less so than in _C. milii_. No white stripe between the eyes as in that species, the space not lighter than the top of the head and back; ears very dark brown; a dark brown ring round the eyes; a white stripe along the side of the neck. Under side of body and inner side of limbs greyish-white. Length, 10½ inches; tail, 9 inches. Skull smaller in all its dimensions than _C. milii_; the face longer and more tapering; the nasal bones broader before and behind; the posterior perforations in the palate large, as in _C. milii_; mandible less spread; the inner cusp of the anterior upper pre-molar less developed; basal heel of upper and lower canines stronger; posterior lower molar longer and with a distinct heel. DISTRIBUTION.--This species is known from a single skin in the collection of the British Museum, which was obtained at Vohima, on the north-east coast of Madagascar. III. THE HAIRY-EARED MOUSE-LEMUR. CHIROGALE TRICHOTIS. _Chirogaleus trichotis_, Günther, P. Z. S., 1875, p. 78, pl. xv. _Chirogale trichotis_, Forsyth Major, Nov. Zool., vol. i., p. 26 (1894). PLATE V. [Illustration: THE BLACK-EARED MOUSE-LEMUR.] {53}CHARACTERS.--Brownish-grey above; lower parts grey with the hairs white-tipped; a spot in front of the eye black; the lips and a line down the nose, white. Hands and feet grey, the hairs white-tipped. Ears short, concealed in fur, with tufts of long hair on the lower part and on the space in front of the ears. Tail shorter than the body, its hair short except forwards, where it is longer. Skull depressed and flattened; cranial portion short. DISTRIBUTION.--The only known specimen of this species is the type in the British Museum, obtained by Crossley during his journey from Tamatave to Mouroundava. IV. CROSSLEY'S MOUSE-LEMUR. CHIROGALE CROSSLEYI. _Chirogaleus crossleyi_, Grandid., Rev. et Mag. de Zool., xxii., p. 49 (1870). CHARACTERS.--Smaller than _C. melanotis_ (Major); tail short and very hairy. Head very large, rounded; ears small and haired. Hind-limbs longer than fore. Upper side, especially the head, rufous; under side greyish-white. Round the eyes a black ring; inner aspect of the ears dark brown, the upper border black. (_Grandidier._) Length, 8 inches; tail, 4¾ inches. DISTRIBUTION.--Crossley's Mouse-Lemur is known as yet only from the forests to the east of Antsianak, in Madagascar.