606 Mr. 0. Thomas on 



LXX. — Three new Mammals from the Lowsr Amazons. 

 By Oldfield Thomas. 



(Published by ijermission of tlie Trustees of tbe British Museum.) 



Thanks to the kindness of the authorities of the Goeldi 

 Museum, Para, I have had the privilege of working out a 

 collection of small mammals made by the Director of that 

 Museum, Friiulein Dr. E. Suethlage, on the Lower Tocantins 

 — chiefly at Cametd, besides a certain number of specimens 

 obtained at Para itself. Among these there are several rare 

 and interesting species, and the following three new ones : — 



CalUcehus emilice, sp. n. 



Rufous- bellied group. Back rich bay or hazel. 



Upper surface, instead of the usual grizzled greyish brown 

 found in most of the rufous-bellied Titis, rich rufous bay, or 

 hazel*, this colour covering the whole back, from the 

 occiput to the rump. On the nape the hairs are grizzled 

 brown and whitish, with lufous tips ; on the back they are 

 dark smoky brown for two-thirds their length, their terminal 

 third rich hazel. Crown greyish, more wiiitish anteriorly. 

 Ears ashy grey, the long hairs on the antitragus tipped with 

 black. Whole of under surface and inner side of limbs 

 bright orange rufous. Fore limbs from shoulders to wrists, 

 an ill-defined line along flanks (between the hazel of tlie 

 back and the rufous of the belly), and hind limbs from hips 

 to metatarsus grizzled ashy grey; hands and posterior digits 

 whitish. Tail chestnut-brown at base, then deep black 

 (though the bases of the hairs are whitish), the end with a 

 whitish tuft. 



Measurements of the tjq^e (measured on skin) : — 



Head and body 320 mm. ; tail 400; hind foot 81. 



Hah. Lower Amazons. Type from the Para Zoological 

 Gardens. 



Ti/pe. Adult female. B.M. no. 11.4.28.1. Presented 

 by tlie Goeldi Museum, Para. 



This most handsome and striking species is distinguishable 

 at a glance by the rich deep hazel or maroon-chestnut of its 

 back, no other CalHcehus having any such coloration. Its 

 nearest allies would seem to be C. donacophilus^ moloch, 

 ornatuSj and remulus^ but the back in all of these is of the 



* No figure in Eidgway quite matclies tlie colour, wliicli is darker, 

 richer, and more vivid than " hazel." 



