84 ^Ir- 0. Thomas on 



slender, strorifrly curved, and acute. The metasternum is 

 closely punctured and sliortly pubescent at the sides and 

 smooth in tlie middle, and the abdomen is smooth, with 

 scanty pubescence at the sides. The front tibia is bidentate, 

 and the longer claw of the front and middle feet cleft. The 

 antennal club is long in both sexes. 



($ . The terminal tooth of the tibia is short and sharp. 



$ . Tlie terminal tooth of the tibia is long and blunt. 

 The following species of Anomala also occur in Sikkim : — 



A. erythroptera, Kr. 



A. [Adoretosoma] ehgans, Bl. 



A. {('alHstethus) atironitens^ Hope. 



A. [CalUstethxis) plerygophorus, 01. 



VIII. — On small Mammals from the Lower Amazon. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



T OWE again to the kindness of the authorities of the Goeldi 

 Museum, Para, the opportunity of examining a number of 

 small mammals from the Lower Amazon recently added to 

 that ^luseum. 



Apart from a few odd specimens from localities near Para, 

 tlie series consists of two collections — the one made by the 

 Director of the Museum, Fraulein Dr. E. Snetlilage, at 

 Boim, near the mouth of the Tapajoz ; and the other formed 

 by one of her pupils, Mr. Oscar ]\lartins, at Faro, on the 

 north side of the Amazon, near the mouth of the River 

 Yamundd, some 200 kilometres N.W. of Boim. 



The whole set prove to be of great interest, and sliow that 

 furtiier mammal collecting in this region is likely to result in 

 valuable discoveries. Isot only are there two very striking 

 new species, the marmoset from Faro and the Ptramys from 

 Boim, but that most interesting group the Loncherinoi is repre- 

 sented by a number of little-known species, of which the 

 most notable is Isothrix pagurus, now again obtained for the 

 lirst time since its discovery seventy years ago. 



Tlie following is a list of all the specimens sent. 



Alouatta sefiicuhis, L. 

 One specimen. 



