330 



On a neio Genus of Salmonoid Fishes. 



Museum iii a mummified condition ; but I have succeeded 

 by careful soaking in restoring its appearance to a certain 

 extent and rendering it fit for description. It is now preserved 

 in spirit. It must be made the type of a new genus, which 

 I propose to call 



Phylogephyra. 



Mouth large, both jaws equal in front, the lower articu- 

 lating with the suspensorium just behind the vertical of the 

 orbit. Teeth strong, curved, close together, in one row in 

 the pra?maxillary, maxillary, and mandible, in a large cardi- 

 form patch on the head of the vomer, in another on the tongue, 

 and in two series on the palatines. Branchiostegals 11. 

 Dorsal rather elongate, with 20 rays, the four anterior adnate 

 and unbranched ; anal moderate, with 15 rays, the three ante- 

 rior adnate and unbranched. Scales moderate. Anterior 

 ribs with epipleurals. 



Phylogephyra altaica. 



Side view of head, natural size. 



Depth of body 5 times in total length, length of head 3| 

 times. Snout rounded, not projecting, 1^ diameter of eye, 

 whicli is 5 times in length of head and 1^ in intcrorbital 

 width; maxillary 4 times as long as deep, 2| in length of 

 head, extending to below posterior third of eye ; supplemental 

 maxillary small. Gill-rakers moderately loTig, slender, 11 on 

 lower part of anterior arch. Dorsal equally distant from the 

 end of the snout and the base of the caudal, its length equal 

 to I tliat of the head, the longest rays ^ the latter length. 

 Adipose fin small, more than twice as far from the dorsal 



