various SoutJi- American Mammals. 361 



some young specimens from Ajo, an adult from Esperanza, 

 m^ar Parana, and a skull from Peru station, N.W. of iiahia 

 Blanca. Tlie species no doubt occurs commonly all over the 

 Pampas region as far north as Paraguay. 



A more jackal-like form of this black-chinned group occurs 

 in Peru : — 



PseudaJopex inca, sp. n. 



C'oavser-liaired than Ps. azarica, colour more drabby. P/u* 

 much Uvrger. 



Size of skull somewhat larger than in Ps. azarica, though 

 the Hesh-dimensions are less. Fur coarser and liarsher. 

 General colour less strikingly contrasted black and whitish, 

 more drabby brown, the light part of the hairs and the liglit 

 shoulder-patches near " wood-brown.'" Under surface mixed 

 drabby brown and whitish, the chin black, the middle line of 

 throat, chest, and belly wliite, broken by a transverse bar of 

 drabby brown on the chest. Head grizzled brown and 

 whitish. Ears and postaural patch dull tawny brown. 

 Outer side of limbs dull tawny, a marked black patch on the 

 back of the thigh. 



Skull rather laiger and heavier than that of Ps. azarica, 

 but the postorbital processes less expanded ; up[ter caruassial 

 large and heavy, more as in the Ps. culpcbus group. 



Dimensions in the flesh : — 



Head and body 6-40 mm.; tail 320; hind foot 138; 

 ear 98. 



Skull: greatest length 155; condylo-basal length \^S ; 

 zygunuilic breadth iii'ij ; nasals 5-4 ; int(;rorbital breadth 27 ; 

 tip to tip of postorbital processes 34'7 ; breadth of brain- 

 case -49 ; pahital length 7i) ; ;/ on outer edge 15'b; vi^ and 

 tn'^ combined IG'3. 



Hub. Sumbay, Arequipa, Peru. Alt. -lOOO m. 



Type. Adult female. 13. M. no. 0. 10. 1. 1. Original num- 

 ber 1048. Collected 7th June, IDUO, by Perry O. Simons. 

 Presented by Oldtield Thomas. 



This striking jackal-like dog, by its heavy dentition and 

 especially its large carnassial, might have been thought to 

 belong to the culpitxis group, but the highly characteristic 

 external markings, the blaf.k chin, black thigh-patch, and 

 brownish (instead of reddishj rump and hams show conclu- 

 sively that it is more allied to Azara's fox, the Chilla, and 

 their allies. It is, however, readily distinguished from any 

 of them by its coarse hair, duller colour, and large teeth. 



Mo member of the group has hitherto been recoided from 



