678 DR. J. E. GRAY ON THE URSID&. [Dec. 13, 
Section I. Bracnypopa. Toes straight; claws exserted. 
A. Tail very short; body massive ; limbs short ; nose short ; teeth 42. 
db. 
Ursina. 
. Sea-Bears. Soles of the feet hairy, with a few bald pads. The 
tubercular grinder longer than the flesh-tooth. Lips slightly 
extensile. Cutting-teeth 6/6. Ears rounded, hairy. 
. TuHaxtassarctos. Nose of skull produced, longer than broad. 
Front false grinders small, far apart; upper tubercular mo- 
derate. 
Land-Bears. Soles of the feet bald, callous. Cutting-teeth 6/6. 
Lips slightly extensile. Cover of nostrils moderate. Ears 
rounded, hairy. Underside of the base of the toes hairy. 
. Ursus. Nose of skull produced, longer than broad, rounded 
above. Forehead convex, separated from the nose by a cross 
line. False grinders far apart, small. Palate flat. Brain-case 
swollen. Lower jaw moderate. 
. Myrmarcros. Nose of the skull produced, much longer than 
broad, flat above. Nose, forehead, and front of crown all on 
one line. False grinders far apart, small. Palate concave. 
Brain-case compressed. Lower jaw large, elongate. 
. Hetarcrtos. Nose of skull very short, as broad as long, forming 
a line with the forehead. False grinders crowded, large. Pa- 
late broad, flat. 
. Honey-Bears. Soles of the feet bald, callous. Cutting-teeth 
4/6. Lips very extensile. Nostrils large, with a large cover. 
Front of palate bent up. Lars tufted. Underside of base of 
toes bald. 
. Metursus. Nose of the skull produced, longer than broad, 
rounded above. False grinders far apart ; upper hinder tuber- 
cular short. 
B. Tail elongate ; body and limbs moderate ; teeth 40. 
* Head elongate ; nose produced, mobile ; underside convex, rather 
6. 
bald, without any longitudinal central groove. Nasuina. 
Nasuva. 
** Head ovate; nose short ; underside flat, hairy, with a central 
7s 
longitudinal groove. Procyonina. 
Procyon. 
