70 



A. PHOCINAE. 



8,1. 



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



Calloceplialus Gray. Halicyon Gray. 



Pagomys Gray. 

 Fagophilus Gray. 

 Erignatktis Gill=P/ioca Gray, not Linn. 



5 O 



g. 

 Ilalichoerus Nilss. 



.3. 

 Monachus ~F\Qm.=PeIagios F. Cuv.=neliophoca Gray. 



B. CYSTOPHOKINAE. 



Cystophora Nilss.Stemmatopus F. Cuv. 



Macrorhinus F. Cuv.=jlfiVowtt$ra Gcr&y=:Macrorhyna Gray=J/orur?5ra Gray. 



C. STENOKHYNCHINAB. 



Lobodon Gray. 

 Stenorhynchus F. Cuv. 



Leptonychotes=Leptonyx Gray, not Sw. 1821. 

 Ommatophoca Gray. 



Extinct Phocidae? 

 Pachyodon Meyer. 

 Pristiphoca Gerv. 



STJPEE-FAMILY EOSMAEOIBEA. 

 XXVII. ROSMARIDAE. 



Single genus. 

 Rosmarus $cop.=0dobaenus (Briss.) Ill. = 7VicAec/is 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 bones 

 correspondingly modified. Astragalus with its anterior or inferior articular 

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

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



