65 



1. Last molar of upper jaw (M J transverse; (with the inner ledge 

 compressed). 



20B.ILLINAB. (E.) 



D. Auditory bulla little inflated, transversely constricted behind the mea- 

 tus auditorius externus and thenoe inwards ; in front flattened forwards : 

 periotic region expanded outwards and backwards. Palate deeply 

 emarginated. 



1. Last molar of upper jaw (M-j-) quadrangular, wide, but with an 

 extended outer incisorial ledge. 



MEPHITIWAB. (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 iuterdigital 

 membrane, and adapted for swimming. 



A. Teeth normal; 36 (M |, PM -f, C i, I |x2): sectorial tooth (PM4) 

 normal, efficient, with an expanded inner ledge ; the other molars 

 submusteliue. Posterior feet with normally long digits. 



LUTBIlfAB. (G.) 



B. Teeth very aberrant, 32 (M I, PM f, C |, I f the lower inner incisors 

 being lost X2) : sectorial tooth (PM-^) defunctionalized as such, 

 compressed from before backwards ; the other molars also with blunted 

 cusps. Posterior feet with elongated digits. 



ENHYDHIKTAB. (H.) 



A. MUSTELINAB. 

 . 1. 



(Digitigrade.) 



Mustela L., G\iv.=.Vartes Gray (Les Martes Mustela Cuv). 

 Putorius Cnv.=Foetorius Keys, and Bias. 



Putorius Gray. 



Gymnopus Gray. 



Gale Wa,gi\ev=Mustela Gray, not CUT. 



Lutreola Wagner= Vison Gray. 



. 2. 



(Plantigrade.) 

 Galictis Bell='jVara Lund. 



Galera Gray. Grisonia Gray. 



. 3. 



(Sub-plantigrade. ) 

 Gulo Storr. 



B. MELINAE. 



Taxidea Waterh. 

 Meles Storr=7 7 aa:MS Cuv. 

 Mydaus F. Cuv. 



Arctonyx F. Cnv.=Synarchus Gloger. 

 August, 1871. 



