18';8.J DR. J. K. GRAY ON THE CANID.E. 51 J 



c. Fox-tailed Wolves. Tail elonyate, reachiny beluw the heels, 

 more or less curved, and covered ivilh more or less elonyated 

 hair not forming a full brush. South America. 



8. Lycalopex. 



Pupil circular. Tail reaching below the hocks. The upper 

 tubercular teeth oblong, taken together much longer than the flesh- 

 tooth. South American. 



Cerdocyon, Ham. Smith, Dogs, i. 289, 1839. 

 Lycalopex, Burmeister, Fauna Brasil. '2J, 31. 



1. Lycalopex VETULUS. B.M. 



Tail very long, bushy ; underside pale yellow. Snout reddish 

 brown. Coronal ridge narrow linear. 



Canis vetulus, Sund. Bras. 21, t. 40. 

 C. azarte, Pr. Wied, Abild. t. 



C. (^Lycalopex) vetulus, Burmeister, Faun. Bras. 3", t. 23, t. 28. 

 f. 1, t. 29. f. 1. 

 Hah. Brazil. 



2. Lycalopex fulvicaudus. B.M. 



Underside of tail reddish yellow. Temporal muscles separated by 

 a well-marked narrow lanceolate crown, which is linear for one-fourth 

 of its length behind (see Burm. t. 28. f. 2). The upper sectorial 

 tooth short, broad, thick ; upper tubercular teeth largo, nearly 

 similar in size and form. 



Canis fulvicaiidatus, Sund. Bras. 20. 



C. {Lycalopex) fulvicaudus, Burm. Faun. Bras. 40, t. 24, t. 28. 

 f. 2, t. 29. f. 2. 



Hal). South America. 



Skull 820 a is ver^^ like those figured by Burmeister, t. 28. f. 2, 

 t. 29. f. 2; but the lower edge of the lower jaw is not so much 

 arched. 



Skulls 821 a and h both differ from 820 « in the upper sectorial 

 and the tubercular grinders being smaller than they are in that skull. 

 In 820 a the upper sectorial tooth is thick, nearly triangular, broad, 

 and with a well-marked lobe ou the front of the inner edge. In 82 1 a 

 it is nearly of the same form — if anything, rather more equilaterally 

 triangular ; but it is smaller than in 820 a. 



in. liu. 



Skull 820 a 4 3 long. 



Skull 821a 4 „ 



It is evident that the teetli of these Dogs vary in size in the 

 same species. 



Var. 1 . chiloensis. B.M. 



Upper sectorial tooth compressed, with inner front lobe rather in 



fiont of the front edge of the tooth ; crown of skull flat, uarrow, 



