70 



A. PHOCINAE. 



8.1. 



Phoca Linn., GiU=Callocephalus F. Cuv., Gray. 



Callocephalus Gray. Ealicyon Gray. 



Pagomys Gray. 

 Pagophdus Gray. 

 Erignathas Gill=Phoca Gray, not Linn. 



§.2. 



Halichoerus Nilss. 



§.3. 



Monachus Flem.=Pelagios F. Cuv. =IIeliophoca Gray. 



B. CYSTOPHOEINAE. 



Cystophora Ni\ss.=Ste7?imatopus F. Cuv. 



Macrorhinus F. Cuv.=J/iVou>isra Gray=Afacror/n/na Gray=J/o;- 101.7a Gray. 



C. STENOK.HYNCHINAE. 



Lobodon Gray. 

 Slenorhynchus F. Cuv. 



Leptonychotes=Leptonyx Gray, not Sw. 1821. 

 Ommatophoca Gray. 



Extinct Phocidae? 

 Pachyodon Meyer. 

 Pristiphoca Gerv. 



SUPER-FAMILY ROSMAROIDEA. 

 XXVII. ROSMARIDAE. 



Single genus. 

 Rosmarus Sco-p.=Odobaenus (Briss.) Il\.=Trichechus auct. pi., not Linn. 



Extinct Rosmaridae. 

 Trichechodon Lankester. 



UNGULATA. 



SUB-ORDERS. 

 * 



I. Digits paired, the third and fourth being subequally developed and ex- 

 serted ; (the fifth, generally, nearly corresponding in size and position to 

 the second, and, generally, developed — or atrophied — in nearly equal 

 degree;) the articulating phalanges and proximal carpal and tarsal hones 

 correspondingly modified. Astragalus with its anterior or inferior articular 

 surface divided by a crest into two sub-equal facets. Femur without 

 a third trochanter, and with its shaft generally perforated at the fore and 



