XVII GALAGO AND CHIROGALE 543 
different in the two districts. In Madagascar we have Opolemur, 
Microcebus, and Chirogale; on the continent, Galago. The 
members of this sub-family have markedly large ears, which are 
but little furry; the tail is long. A very marked skeletal 
character distinguishes this sub-family from other Lemuridae, 
and allies them to TZarsius, that is the lengthening of the 
caleaneum and naviculare in the ankle. The dental formula is 
as in Lemur. The supporting bands of the caecum are in this 
sub-family as in the genus Lemur. There are but two folds, of 
which one is median and non-vascular; the lateral fold bears a 
blood-vessel, and is joined by the median frenum. The brain is 
but little known. The only figure of the brain of Galago is one 
by myself. There are four mammae, two on the breast and two 
upon the abdomen. 
The genus Galago comprises at any rate six distinct species. 
They are all African, and range right across the continent from 
Abyssinia as far south as Natal, and to Senegambia in the west. 
The incisors of the upper jaw are small and equal; there is a 
gap between the canine and the first premolar. The molars and 
the Jast premolar have four cusps; the last molar of the lower 
jaw has an additional fifth cusp as in MJacacus, etc. The Galagos 
are chiefly nocturnal, and are more or less omnivorous. Owing 
to their long hind-legs these animals when they leave the trees 
advance upon the ground by hops like a Kangaroo. (alago 
senegalensis makes a nest in the fork of two branches, where it 
sleeps during the day. The Great Galago (G. crassicaudatus) 1s 
named by the Portuguese “Rat of the Cocoa-nut Palm.” Sir 
John Kirk, after whom a variety of this species is called, relates 
that it is incapable of resisting the fascinations of palm wine, 
upon which it will readily intoxicate itself, and as a consequence . 
brave probable captivity. I have referred above (p. 536) to the 
patch of spines upon the tarsus of G. garnetti. 
The genus Chirogale is entirely confined to Madagascar. It is 
to be distinguished from Galago by the fact that the inner incisors 
are larger than the outer. There are five species of the genus 
known: four previously to Dr. Forsyth Major’s recent visit to 
Madagascar, and a fifth brought back by him.t In connexion 
with this genus the naturalist just mentioned has observed 
that all the Lemurs of Madagascar, including the aberrant 
1 See Novitates Zoologicae, vol. i. 1894, p. 2. 
