60 
1. Last molar of upper jaw (M =) transverse; (with the inner ledge 
compressed). 
ZORILLINAB. (&.) 
D. Auditory bulla little inflated, transversely constricted behind the mea- 
tus auditorius externus and thence inwards; in front flattened forwards: 
periotic region expanded outwards and backwards. Palate deeply 
emarginated. 
1. Last molar of upper jaw (M +) quadrangular, wide, but with an 
extended outer incisorial ledge. 
MEPHITINAE. (D.) 
II. Skull with the cerebral portion swollen backwards and outwards; and 
with the rostral portion abbreviated, high and truncated forwards, and 
widened and depressed above: anteorbital foramen enlarged and pro- 
duced downwards and backwards. Feet with well-developed interdigital 
membrane, and adapted for swimming. 
A. Teeth normal, 36 (M }, PM 4, C }, I x2): sectorial tooth (PM +) 
normal, efficient, with an expanded inner ledge; the other molars 
submusteline. Posterior feet with normally long digits. 
LUTRINAE. (G.) 
B. Teeth very aberrant, 32 (M 1, PM 3, C +, I $—the lower inner incisors 
being lost— <2): sectorial tooth (PM =) defunctionalized as’ such, 
compressed from before backwards ; the other molars also with blunted 
cusps. Posterior feet with elongated digits. 
ENHYDRINAE. (H.) 
A. MUSTELINAE. 
Dord lr 
(Digitigrade. ) 
Mustela ., Guv.=Martes Gray (Les Martes—JLustela Cuv). 
Putorius Cuv.=Foetorius Keys. and Blas. 
Putorius Gray. 
Gymnopus Gray. 
Gale Wagner=Mustela Gray, not Cuy. 
Lutreola Wagner= Vison Gray. 
§. 2: 
(Plantigrade. ) 
Galictis Bell=Lirara Lund. 
Galera Gray. Grisonia Gray. 
§. 3. 
(Sub-plantigrade. ) 
Gulo Storr. 
B. MELINAE, 
Taxidea Waterh. 
Meles Storr=Taxus Cuv. 
Mydaus F. Cuv. 
Arctonyx F, Cuv.—=Synarchus Gloger. 
August, 1871. 
