1868] DR. J. E. GRAY ON THE CANID^. 495 



sectorial grinders compressed, three-lobed, with a small tubercle 

 on the front part of the inner side ; tubercular grinders ^^ 

 Pupil often elliptical, erect. 



1 1 . VuLPES. Ears moderate ; ear-bullae moderate. 



12. Fennecus. Ears very large ; ear-bullae large. 



13. Leucocyon. Skull broad in front of orbits. 



E. Bristle-tailed Foxes. Tail elongate, hairy, with a crest of bristles 



along the upper edge. Teeth like Foxes. 



14. Urocyon. 



F. Raccoon Dog. Tail short, straight, bushy. Upper sectorial 



grinders compressed, three-lobed, with a small anterior internal 

 lobe ; tubercular grinders 5^^. 



15. Nyctereutes. 



II. Aberrant Canidce, or Viverrine Dogs. Upper sectorial teeth 

 small, triangular, as broad as long ; tubercular grinders ^^, ob- 



long transverse, subequal. 



Subfam. 4. Megalotina. Tail straight, short, bushy. Skull 

 elongate. Ears large. 



16. Megalotis. 



The subfamilies may be thus arranged : — 



(\. Lycaonina ] 



I. Skull solid; post orbital | 2. Canina I Tail short, straight, bushy. 



process thick, cnvex-^ Wolyes J 



above. Lupix.e | Caninia (Dogs) Tail elongate, curled to the left, 



l^ Fox-tailed Wolves... Tail elongate, .straight. 



II. SkuU thin ; postorbital I .V ^°?^^' ' l" -.V ^ ^ l^'\ e\o^^g^i^, soft bushy. 



process thin, concave }: Bristle-tailed Foxes . Tail elongate, bristly, busby. 



above. VUL..I.X..E [^ vrverrine Dog':::.':." } ^^^ ^''°r*' '^'^^^^'■' ^^'^y- 



I. Normal Canidse. The upper sectorial grinders compressed, three- 

 lobed, ivith a small tubercle on the front of the inner edge. 



Section 1. Ltipin^e. Skull thick, solid ; jiostorbital process thick, 

 convex above, and bent down at the end. 



LupincB, part., Burmeister and Spencer Baird. 



Subfam. 1. Lycaonina. 



Head short, broad ; nose short, broad. Teeth large, close toge- 

 ther. Palate very broad, short. 



1. Lycaon. Hysena Dog. 

 Skull short, broad ; nose short, bread, swollen ; j)alate short. 



