2/8 f ROF. HUXLEY ON THE CRANIAL AND [Apr. 6, 



Table XIX. — Cranial and Dental Measurements o/Lycaon. 



I. II. III. IV. V. 



Total length 185 194 203 ... 250 



Length of palate 88 91 100 98 100 



Breadth „ 76 73 69 71 74 



Length of basicranial axis ... 63 69 68 71 69 



?I!L^ 20 20 20 20-5 21 



„ ■ ^ 15 15 15 16-5 16 



Breadth „ 15-5 15-5 16 ... 165 



Length of ^1^ 7 6 7 7-5 7-5 



Breadth , 9 8 105 ... 10 



Lengthof 23-5 24 24-5 25 25 



TO. 1 



9-5 10 9 9 11 



m. 2 



4 4-5 4-2 6 



m. 3 



The Indian Wolf, Lujms palHpes, more nearly approaches the 

 Jackals than any other Old-World Wolf I have seen. But only 

 two skulls of this species have as yet come into my hands ; and 

 though they differ considerably, tlie chances are greatly against 

 their representing the extremes of variation of the species. When 

 the Canidse of Turkestan are better known than at present, I have 

 little doubt that the inconsiderable break between the Old-World 

 Jackals and Wolves will be filled up. 



It is obvious that the range of variation of the Eastern is as great 

 as that of the Western Wolves (Table XX.) ; and I conceive that 

 C. pallipes, C. chanco, and C. laniyer must be regarded as mere 

 local varieties of G. lupus, inasmuch as the table shows that the 

 European Wolf (Nos. ii., v., vii., viii.) includes within its range 

 of variation all the cranial differences presented by these so-called 

 species. 



13. The palseontological history of the Canidce is, at present, very 

 imperfect ; but sufficient has been ascertained to enable us to obtain 

 a general conception of the phylogeny of the group. 



There is no question that Thooids and Alopecoids similar to those 

 which exist at present inhabited Europe during the Quaternary 

 epoch. Remains of the Dingo have been found in Australian 

 deposits of apparently the same age ; and the explorations of Lmul 

 in the Brazilian caves have demonstrated the existence of several 

 forms of Canidse of the existing South-American types — among the 

 rest, of Icticyon, with which I conceive Lund's Speothos must be 

 merged. 



The PalcBocyon of Lund, a large wolf-like animal with forty-two 

 teeth, but with the second upper molar very small and with the 



