the Lower Amazons. 275 



The capture of a specimen at Villa Braga extends the 

 known range of these giant squirrels eastwards from the 

 Madeira to the Tapajoz basin. 



34. Sciurus cestuans paraensis, Goeldi. 



4 <J. 102, 103, 104, 105. Flor do Prado, Quatipuru, 

 Coast E. of Para. 



c? ? . L. 82, 83. Camera, Tocanfins (F. Lima). 

 <J. M. 5. Tanaquara (0. Martins). 

 ? . S. 135. Rio Jamauchim. 

 2 $ . S. 133, 134. Villa Braga, Tapajos. 

 ? . S. 25. R. Iriri, R. Xingii. 

 ? . L. 35. Sena do Castillo, Cear^ (F. Lima). 

 It is at present impossible to make a satisfactory deter- 

 mination of every one of these squirrels, which show a wide 

 range of colour-variation, especially in the amount and in- 

 tensity of the buffy of the under surface. The name paraensis 

 seems to be the best to use provisionally for them until they 

 have again been revised with much further material. 



35. Microsciurus manarius, sp. n. 



<J . 85, 86. Acajutuba, Rio Negro, near its mouth. 



An olive species with buffy ear-patches. No p % in either 

 of the two specimens. 



Fur short and close. General colour above olive-brown, 

 warmer and more buffy on the face and crown. Under 

 surface buffy, of medium richness. Ears with their inner 

 surface and the upper third of their outer surface (proectote) 

 deep ochraceous buffy ; lower two-thirds of outer surface and 

 patch behind them paler buffy. Eye-rims buffy. Hands and 

 feet greyish olivaceous. Tail long, narrow, its hairs deep 

 reddish tawny basally, this colour making a median line 

 along the lower surface, black subterminally, and pale buffy 

 at tips; the long hairs at the end of the tail tipped with 

 tawny. 



Skull of about the size and shape of that of M. rubrirostris, 

 Allen ; narrower and with less widely expanded zygomata 

 than that of M. flaviventer, Gray. 



Small upper premolar (p s ), whose presence is supposed to 

 be characteristic of Microsciurus , absent in both specimens. 



Dimensions of the type : — 



Head and body 127 mm.; tail 129; hind foot 38; 

 ear 16. 



Skull : greatest length 36*3 ; condylo-incisive length 32 ; 



