in the Collection of the British Museum. 4.23 
4. Macroxus nicoyana. 
Fur rather thick and abundant, yellowish iron-grey ; hairs 
black, with a broad subterminal white band; shoulders, thighs, 
legs, and sides of the body rufous-washed ; tail black, very slightly 
punctulated ; head white iron-grey ; cheeks and chin pale grey; 
ear-tuft large, white; throat, underside, and inner sides of the 
legs bright red brown, varied with large white subsymmetrical 
blotches: tail black, white-washed, hairs black (those of the 
underside of the tail more or less brown at the base), with a 
long white tip. Head and body 12 inches long. | 
Hab. Costa Rica, Nicoya (O. Salvin). B.M. 
The white on the underside is perhaps an individual pecu- 
liarity. 
5. Macroxus aureogaster. 
Sciurus aureogaster, F. Cuv. Mamm. Lithog. lxx. t.; Geoff. Voy. Venus, 
Zool. 1855, p. 136, t. 10, 11. 
Se. leucogaster, F. Cuv.; Sp. Baird, M. N. A. 282. 
Dark iron-grey ; crown of head, nose, and feet blacker ; sides 
of the body, throat, chest, belly, inner sides and edges of the 
limbs red brown; hairs black, mixed with grey or red tips: tail 
bushy, black, white-washed ; hairs red yellow at the base, then 
black, with long grey tips. 
Hab. Columbia. 
Var. 1. Red, darker chestnut on the shoulders and front 
part of the back ; hairs of tail black at the base, with a yellowish 
ring, and then black, with grey tips. 
Var. 2. Fur with a redder tinge; hair lead-coloured, then ru- 
fous, with black rings and grey tips; nape, shoulders, rump, and 
outer sides of thighs reddish; tail-hairs red at the base, then 
black, with grey tips. 
Sciurus aureogaster, 1. Geoff. Voy. Venus, t. 11, 2. 
Hab. “ Mexico” (F. Cuvier). South America (Verreaux) : 
B.M. Columbia (Parzudaki): B.M. 
These squirrels were received from Parzudaki and Verreaux’ 
as the S. aureogaster of F. Cuvier. The last variety is somewhat 
like I. Geoffroy’s figure of the female in the Voy. of the Venus, 
11. . 
I have not seen any specimens like those figured as varieties 
of the same species in tab. 10 of that work, which appear to be 
nearly white, with reddish nape and rump, the colour of the 
underside not being shown. 
29* 
