150 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. X. 



Marmosa musicola Osgood. 



Five specimens, Moyobamba. 



This species, which is of a common cinnamon type of coloration, 

 was found only in the gardens and about the houses in the town of 

 Moyobamba. So far as indicated by material at hand, it is somewhat 

 similar to Marmosa quichua from which it is amply distinguished by its 

 well-developed angular postorbital processes. Although presenting 

 larger dimensions, it may be allied also to M. lepida, a species we were 

 not fortunate enough to obtain although its type locality, Santa Cruz, 

 is but a short distance from Lagunas where Mr. Anderson worked for 

 nearly two weeks. 



Marmosa waterhousei Tomes. 



Didelphys waterhousii Tomes, Proc. Zool. Soc., Lond., pp. 58, 271, 



303, pi. LXXVI, 1860 Gualaquizar, Ecuador. 

 Didelphys cinerea Thomas, Cat. Marsupialia Brit. Mus., p. 342, 



1888. 

 Marmosa germana Thomas, Ann. & Mag. Nat. Hist., (7), xm, p. 



143, Feb., 1904 Sarayacu, Ecuador. 

 Two specimens: Moyobamba (i), Yurimaguas (i). 

 These were obtained in gardens among the plantains. Neither of 

 them shows any white on the tail. The species is closely allied to 

 M. cinerea and probably will prove to be only subspecifically separable 

 from it. Both the original description and the accompanying colored 

 figure of Marmosa waterhousei indicate that M. germana, later described 

 from a neighboring locality, is a synonym. 



Chironectes minimus (Zimm.). WATER OPOSSUM. 



An adult female and a small young one were obtained at Moyobamba 

 from a native who said he had killed them with his paddle at an early 

 hour in the morning as he was crossing the river in a canoe. The skull 

 of the adult shows rather marked differences from the figure published 

 by Burmeister (Erlaut. Fauna Bras., pi. XI, fig. 3, 1856), especially in 

 the shape of the nasals. Burmeister's specimen doubtless came from 

 southeastern Brazil ("Neu-Freiburg") and it is scarcely safe to assume 

 that it represents true minimus of which the type locality is Cayenne. 



Bradypus sp. THREE-TOED SLOTH. 



An adult female secured by Mr. Anderson from a native at Yuri- 

 maguas is in the collection. The legs, back, and especially the rump 



