in the Collection of the British Museum. 431 



Young similar, but hairs longer and underside redder; hairs 

 red to the base, without a grey tip or subterminal ring. 

 Hab. Republic of Ecuador (Fraser). B.M. 



The adult male has a small tuft of opaque white hairs on 

 each side of the nape, and a similar tuft on the middle of the 

 right side of the body ; but, as there is no similar spot on the 

 left side, I am inclined to believe they are an accidental indivi- 

 dual variation. 



26. Macroxus tephrogaster. 



Fur soft, rather short, close, dark olive, very minutely punc- 

 tulated with yellow; middle of the back blacker; hairs lead- 

 coloured, with a yellow and black ring and a yellow tip ; cheeks 

 pale; chin, throat, underside of body, and inner sides of legs 

 whitish grey ; hairs lead-coloured, with white tips ; tuft at back 

 of ears yellow grey : tail black, whitish-washed, underside red- 

 dish, with a black border ; hairs yellowish, with a very broad 

 band and white tip. 



Hab. Mexico (M. Salle) : B.M. Guatemala (0. Salvin) : B.M. 

 Bogota (H. E. Strickland) : B.M. Honduras (Dyson) : B.M. 



27. Macroxus tceniurus. 



Fur dark olive, closely and minutely punctulated with reddish 

 yellow, the middle of the back rather blacker ; the sides of neck 

 and body yellower ; hairs black, with minute yellow tips ; cheeks 

 yellow; chin, upper part of throat, and inner sides of the 

 the limbs grey; hairs black, with white tips; hinder part of 

 throat, chest, and belly grey, red-washed : tail depressed, ex- 

 panded, black, white-washed ; under surface red brown, with 

 black margins and grey edges; hairs reddish yellow^, with two 

 or three indistinct narrow bands, a broad subterminal black 

 band, and a grey tip. 



//a6. Guatemala (0. Salvin) . B.M. 



28. Macroxus irroratus. 



Fur olive, closely, uniformly, and minutely punctulated with 

 yellow ; hairs short, close, lead-coloured at the base, black above, 

 with a yellow tip; nose, cheeks, chin, throat, belly, and inner 

 sides of the limbs yellow or reddish yellow ; hairs lead-coloured, 

 with yellow tips ; ear-tuft small, reddish : tail depressed, black, 

 washed with reddish yellow ; hairs rather long, yellow brown, 

 with two narrow inferior and a broad subterminal black band, 

 and a reddish-yellow tip. 



Hab. Brazil, Upper Ucayali (E. Bartlett). B.M. 



Like M. cestuans, but rather larger, cheeks redder, tail broader. 



