1865. ] DR. J. E. GRAY ON THE MUSTELIDE. 101 
4, Vison. False grinders 2/3. Head elongate, narrow. Feet 
slightly hairy ;. pads exposed. Body rather slender ; underside 
same colour as upper. 
5. Gymnopus. False grinders 2/3. Head elongate, narrow. Feet 
rather naked, bald beneath, between, and rather behind the pads; 
toes largely webbed. Soles hairy behind. Body slender. 
B. Subplantigrade. Soles and between the pads hairy. Body stout. 
Tail short, bushy. Anal glands none. False grinders 3/4, 
6. Guo. Tubercular grinder oblong, transverse ; flesh-tooth elon- 
gate, with a small subanterior inner lobe. 
C. Plantigrade. Soles of hind feet bald, callous. Body elongate. 
Anal glands distinct. False grinders 2/3 ; tubercular grinder 
oblong, transverse. 
7. GaveRA. Tail elongate. Soles of hind feet with a central lon- 
gitudinal depression behind, and obscurely divided into four 
large pads in front. Heels hairy. 
8. Grisonra. Tail short. Body slender. 
Tribe 2. Lurrina. Head depressed. Feet normal, rounded ; toes 
webbed. ‘Tail thick, tapering, depressed. Tubercular grinder 
oblong, transverse. 
A. Tail conical, tapering, entirely covered with hair. 
+ The palms and soles of the feet bald between the pads. 
* The muzzle hairy; only the thin margin of baa nadine bald. 
9. Baranera. Claws rudimentary, blunt. Toes rather elongate. 
** The muzzle hairy between the nostrils ; upper and front edge 
of the nostrils bald. 
10. Lonrra. Toes rather elongate, well webbed; claws sharp. 
*** The muzzle bald, band-like between the front and upper edge 
of the nostrils. Orbit of skull defined by a conical process 
behind. 
t. Foot oblong; toes thick, webbed to the claws, sharply clawed ; 
pads of toes and palm large, close together. 
11. Lurra. Claws acute, strong. Head and skull elongate. 
12. Nurria. Claws acute, strong. Head and skull short, broad. 
