358 Mr. O. Thomas on 



reduced tlmt tl.e pnssage to the rufous is further back and 

 more imperceptible. In r.i^m the terminal part of ^.e. 

 nnderfnr is brown, while iu andinus it is " pmbsh buff. 

 Uuder surface mostly whitish, with but little suffusion of 

 rufous: hairs of throat almost pure white. Cum with an 

 inconspicuous brownish patch, as is the case m all tbe laroe 

 Pseud, lopex, while in the smaller ones it is frequent y con- 

 trusted black. Ears, crown, and outer sides of liml)s rich 

 ferruoinous, as usual. Tail with long thick hairs forming a 

 fine brush, ''pinkish buff,'' the patch over gland and tip- 



black. 



Dimensions of tbe type : — 

 Hind foot 148 mm 



Hmd toot ii» mm. ,i 1 rr 



Skull: greatest length 165; condylo-basal length 1.)^ , 

 zygomatic breadth 88; nasals, lengrli on muldle line o4; 

 interorbital breadth 31 ; breadth ot bram-case 50; palatal 

 length 84; length of;/ on outer edge 10, combined length ot 



m^ and w^ 16*8. rn c ^,>, 



Hah. High plateau of Bobv.a and Peru Type f.om 



Esperanza, near Mt. Sajama, Province of Oruro, Bohv.a. 



Alt. 4000 m. Another example from Incapirca, J unin, 1 eru. 



Alt 17 000' (./. Kalinowski). , 



i'V I: Adllt male. P.M. no. 98 3. IG 1 Original 



nuniber 1816. (Collected 9th July, 1897, by Gustav Garlepp. 



Three si)ecimens. i ir i i.^ +k„ 



This plateau fox is clearly most nearly a bed to the 

 northern Ps. C. reism, with which it shares the normal- 

 shaped skull, not disproportionally elongated iti the muzzh- 

 but differs by its more buff-y nape and fore-back, the heavy 

 black grizzling not commencing nearly so tar torward. ll.c. 

 four specimens available are all identical m tins respect. 



Objection may be taken to my considering as the same 



species animals from such enormous north and south '^^f'^^^'^^ 



as from N. Ecuador to the Straits of Magelan (nCarly 



4U00 miles). It must, however, be remembered that owing 



to the unbroken mountain chain running down b. America 



practically sin.ilar climatic conditions are to be found without 



!i hroak throughout the whole distance, only varying with 



altitude, so that there is nothing unnatural in the animals o 



the highlands of the tropics, the middle alt.tudesot Ch.b, and 



the loTvlands of Patagonia being all specihcally the same A 



similar state of things does not occur in any other ol the. 



LH-eat continents of the world. 



^ In Uruguav, however, widely separated from the known 

 r.nire of the (Julpeo, there occurs another species which has 

 as irsual, been calhd ^Canis azar.'^ but proves to be a small 

 rel live of the Culpeo, and is equally different horn the 



