123 



Genus CANIS, Linn. 1 



Following Flower's classification this genus is taken to include 

 all the existing Ganoids, with the exception of Lycaon, Icticyon, and 

 Otocyon it also includes the fossil genera Galecynus, Owen, and 

 Lycorus, Bourguignat. 



Dentition. In typical forms the dental formula is 1. 1, C. \, 

 Pm. |, M. Jj in some aberrant forms (Cyori), however, the true 

 molars are | ; and in the fossil C. (Lycorus) nemestrinus the pre- 

 molars are reduced to |. The formula embracing this range of 

 variation 2 will be I. f , C. \, Pm. JL-, M. ^ There is a great 

 amount of variation in the relative proportions of the different 

 cheek-teeth ; and in the degree of development and position of the 

 inner cusp of the lower carnassial 3 . There is no entepicondylar 

 foramen to the humerus. 



Cante lupudj Linn. 4 



Syn. Cants spelceus, Goldfuss . 

 Lupus spelaus, Blainville e . 

 Canis juvillacm, Blainville 7 (ex Bravard). 



Hab. Europe and North Asia. 



44739. Cranium and mandible, wanting several teeth ; from Hutton 

 Cave, Somersetshire. This specimen is remarkable for the 

 circumstance that the first upper premolar of the left side 

 (of which the anterior half is broken away) is of an elon- 

 gated form like pm. 2, and is inserted by two distinct fangs. 

 The first three premolars are in contact with one another. 

 In the mandible pmTl has only a single root; but the 

 three preceding teeth are relatively long, and are in 

 contact with one another. 



Presented by B. Bright, Esq., 1874. 



1 Syst. Nat. ed. 12. vol. i. p. 56 (1766). 



2 In C. cancriwrus the molars are |-|^> . an( l Filhol has shown that in the 

 long-jawed domestic races like the greyhound m 3. is occasionally present, while 

 in the short-jawed races like the bull-dog m. 3 is sometimes absent. 



3 For a full account of these variations, see Huxley, Proc. Zool. Soc. 1880, 

 p. 238 et seq., and the present writer in the ' Palaaontologia Indica,' ser. 10, 

 vol. ii. p. 240 et seq. 



4 Syst. Nat. ed. 12, vol. i. p. 50 (1766). 



5 Nov. Acta Ac. Cses. Leop.-Car. vol. x. pt. 2, p. 456 (1823). 



6 Osteographie, genus Canis, p. 101 (1841 ?). 



7 Ibid. pp. 125-6. 



