ON THE LEMURIDJ5. 
191 
Species 1 . -^Murine Macauco, Pennant. 
Microcebus murinus. 
Lemur murinuSj Pennant. 
Lemur murinm, Gmel. 
Rat de Madagascar^ Buff., Supp. III. c. fig. 
General colour clear grey; a dark mark at the inner margin of each eye ; a line 
between the eyes running down the top of the nose, white ; throat | and. 
under surface, together with the inside of the limbs, white; tail rufous 
grey. Length of head and body 5| inches; of the tail 6. 
Habitat, Madagascar. 
In Mus. ZooL Soc. 
For an account of the anatomy of this species^ see ZooL Proceedings for 1835, 
p. 125. 
Species 2.—Little Macauco, Brown. .... ; 
Microcebm pusilluSy Geoff. ■' . . » 
Galago Madagascarienisy Geoff. ■ ' 
OMicnus Madagascariensis, Schinz. 
Little Macauco, Pennant. 
Fur soft, general colour rufous brown above, rusty grey beneath; tail long, and, 
somewhat tufted at the top.. Size rather larger than that of preceding 
species. Habitat, Madagascar.—In Mus. Zool. Soc. 
The manner in which these two species have been confounded is not a little 
remarkable, seeing that they are very distinct. It is evident, however, that this 
confusion has arisen from a . want of the opportunity of comparing them with 
each other, an opportunity which we have fortunately enjoyed. Though 
GiOFFROVy as he tells us in his Cours de V Histoire Naturelle^ suspected that 
there were at least two species in the genus Microcebus^ yet he only characterizes 
one as the Microcehe roux^ which he regards as synonymous with Buffon*s Rat 
de Madagascar, In his sketch of the Lemurid(E^ in the Annales^ tom. 19, we 
find the Rat de Madagascar of Buffon, the Little Macauco of Brown, and 
the Lemur murinus of Pennant, synonymous with his GalagoMadagascariensis, ■ 
which he describes as having ‘‘^pelage rouxL’ On referring to Pennant, we find . 
him describing the Lemur murinus and the Little Macauco of Brown as distinct, 
species. The. Lemur murinus he characterizes as being of elegant light 
greyT The description of the Little Macauco is vague, its colour being called 
cinereous!* The former species he states to be about twice the size of a Mouse, 
the latter rather less than the Black Rat” The term cinereous" used by 
Pennant, in contradistinction to elegant light grey" and, the larger size attributed , 
to the latter, render it at least probable that the species indicated in these 
descriptions were truly distinct. Gmelin describes the. Lemur murinus as 
