new Rodents from S. America. 253 



Purticular attention may be directed to his recent admirable 

 papers on the Carnivora of S. Brazil *. 



Proechimys gularis, sp, n. 



A dark-coloured species with a brown throat. No 

 parietal ridges. 



Size fairly large. Coat not excessively spinou-J, the 

 spines practically restricted to the middle of the back, anfl 

 in themselves both flexible and narrow, rarely exceeding 

 lialf a millimetre in breadth ; tlieir tips continued into a fine 

 bristle-hair. General colour above dark rufous brown (paler 

 than " burnt umber/' darker than ^' cinnamon-rufous ''), the 

 dorsal area blackened by the dark tips to the spines. Under 

 surface white or whitish mesiuUy, not sharply defined, but 

 more or less mixed laterally with brownish (pale mars- 

 brown) ; interramia and throat wholly brownisli or biifFy, 

 the hairs either wholly pale brown, or brown with buffy tips. 

 Hands and feet dark brown. Tail of niediuui hairiness, 

 brown above, slightly lighter below. 



Skull with long muzzle. Nasals reaching back about 

 3 mm. past the premaxillary processes, and reaching the 

 level of the front of the orbits. Supraorbital ridges not 

 excessively developed, and not, or very indistinctly, extending 

 backw'ards across the parietals, in this respect markedly 

 differing from the condition in P. semispinosus. Palatal 

 foramina of medium length, not widely expanded, their 

 posterior third with well-marked inturned lip. Posterior 

 palatal edge sharply angular, its point opposite the front 

 of m^. Hamular processes spatulate, about 2 mm. in breadth. 

 Bullae rather small and low. 



Dimensions of the type (measured in flesh) : — 



Head and body 247 mm. ; tail (estimated from other 

 specimens) (c.) 160 ; liind foot (s. u.) 45 ; ear 21. 



Skull : greatest length 61 ; condylo-incisive length 49'5 ; 

 greatest breadth 28*5; nasals 23; interorbital breadth 13*3; 

 palatilar length 21; palatal foramina 6*8; upper molar 

 series (much worn) 9"4. 



Hdh. Canelos, Rio Bobonaza, Oriente of Ecuador. Alt. 

 2100^ 



Type. Old male. B.M. no. 11. 7. 19. 15. Original number 

 182. Collected 22nd May, 1910, by Mervyn G. Palmer. 

 Four specimens examined. 



Tins well-marked species may be distinguished from all 



* Revist. Mus. Paulista, viii. p. 148 (1910; ; Arch. f. Nat. 1910, i. 

 p. 113. 



