SYNONYMATIC LIST OF THE SPECIES. 463 



7. Palatines very short, deeply eniargiuate, aud deeply vaulted. Au- 



ditory bullie concave in front. Adult males with an elongated 

 tubular proboscis. Claws small, those of the pes rudimentary. 



Macrorhinus. 



III. Zygomatic process of the maxillary prolonged backward beneath the 

 malar, the latter elongate. Intermaxillaries not (usually) reaching 

 the nasals. Supraorbital processes rudimentary. Nasals generally 

 greatly prolonged posteriorly, widely expanded anteriorly, and usu- 



f> 9 



ally early consolidated by anchyloses. Incisors <rHi. Molars lobed 

 (in two geuera acutely inulti-lobed). Claws of the hind limbs rudi- 

 mentary, and the outer digitslengtheiied.STENORHYNCHIN.Sl. 



8. Skull elongate, narrow anteriorly. Nasals greatly narrowed poste- 



riorly. Molars 4- or 5-lobed, the priucipal lobe large, pointed, re- 

 curved, with a smaller one iu front of it and two (in the first and 

 second molars) or three (iu the others) slender, pointed, recurved 

 lobes behind it. Lower jaw abruptly angular behind. . .Lobodon. 



9. General form of the skull much as in the last. Nasals greatly pro- 



longed posteriorly. Molars 3-lobed, the central lobe cylindrical, 

 high, pointed, recurved, with a smaller lobe in front and an- 

 other behind the principal one. Lower jaw gently rounded pos- 

 teriorly , Ogmorhirms. 



10. Skull broad; muzzle short and broad, with very short, small nasals. 



Intermaxillaries prolonged upward, meeting the nasals. Molars 

 small, separated, with a central prominent point, and a smaller one 

 (in imworn teeth) behind it. Lower jaw slender, with a short 

 symphysis and no prominent posterior angle Leptonychotes. 



11. Skull very broad (iu general outline much as in the Cystophorince), 



with a broad, short muzzle, and A-ery large orbital fossae. Nasals 

 very broad in front, greatly prolonged and gradually narrowed 

 posteriorly. Molars small, 3-lobed, the central lobe much the 

 largest aud slightly recurved Ommatophoca. 



SYNONYMATIC LIST OF THE SPECIES.* 



I. Genus PHOCA, Linne. 



SYN. Pusa, SCOPOLI ; Callocephalus, F. CUVIER; Pagophilus, Pagomys, Hali- 

 cyon, Haliphilus, GRAY. 



1. Phoca vitulina, Linns'. 



SYN. Phoca variegata, NILSSON, 1820. 



Phoca littorea, THIENEMANN, 1824. 

 Phoca linnwi, tigrina, chorisi, LESSOX, 1828. 

 Phoca canina, PALLAS, 1831. 

 Phoca concolor, DE!VAY, 1842. 

 Halichocrus antarctic-its, PEALE, 1848. 

 Lobodon carcinophaga, CASSIN, 1858. 



*For full citation of the synonymy of the North American Phocids see 

 postea, iu the general history of the species. 



