THE RED-FRONTED LEMUR. LEMUR RUFIFRONS.
Male.—Grizzly, washed with rufous; fore-arms, hands, feet, haunches, outer side of legs, and top of the head between the ears, rufous.
Female.—Grizzly brown; top of head grizzly black; patch over and round the eyes greyish-white.
THE GREY-HEADED LEMUR. LEMUR CINEREICEPS.
Face and frontal spot black; cheeks, sides, top of head, side of neck, and outside of ears grey; rest of body orange-red.
THE COLLARED LEMUR. LEMUR COLLARIS.
Male.—Head blackish-brown; cheeks, sides of throat, mark over eyes, and base of ears, yellowish-grey, washed with orange-red or rufous; a spot at the side of the nose, grey; chin, throat, and under side of the body, blackish-grey.
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.
THE RUFOUS LEMUR. LEMUR RUFUS.
Has a yellowish-white frontal band and whiskers.