From J. E. Gray   7 April 1871

My dear Darwin

I do not know if the following observations are new to you as an instance of great difference between ♂—♀ and great variation in the ♂ and statiblity in the female

Lemur Macaco Linn

female only lately brought to Europe as far as we know is always Brown with, white whiskers¹

L Lecomystax Bartlett P.Z.S²

Males except when pure white all over always have the Head hands & feet. Tail underside of Body and limbs, Black, Nape and ring round base of tail white. The of the fur is Red Chesnut, Reddis Grey or pure white in all the intermediate shades. The White backed variety sometime has a black patch on each houlder and on the front of the thighs   The patches vary in size in different Specimens, sometimes very large, even so large as make the entire animal black L niger Geof³

Ever your sincerly | J E Gray