Dr. J. E. Gray on a new Species of Seal. 303 



almost binck colour; and is unlike that from the Eraser's River, 

 whicli is lighter ami less timifl, being often seen seated on a log 

 floating down with the current." 



The skull of this Seal differs so greatly from those of any of the 

 Seals on the eastern side of the Arctic Ocean, that I am induced to 

 propose for it a new subdivision, which may be thus named and cha- 

 racterized : — 



Ualicyon. 



The palate of the skull arched out behind. Cutting-teeth -, 

 Grinders .'i or 5, lobed, compressed. The lower jaw strong, bowed 

 out on the sides, thick in front, and with a low crest on the inner 

 side of the lower edge near the front ; the ramus of the lower jaw 

 erect, with a tubercular prominence beneath the notch at the angle. 



Ualicyon Richardii, sp. nov. 



Fur pale brown ; when young, darker. 



Ilafj. Fraser's River and Vancouver's Island. 



I have dedicated this species, at the refpiest of Mr. Wood, to Capt. 

 Richard, the Hydrographer to the Admiralty, and Captain of II, M.S. 

 ' Uecate ' when these Seals were collected. I have the more plea- 

 sure in doing this, as the .Museum has received many very interest- 

 ing specimens collected during the voyage of the • Hecate,' showing 

 the interest which her Commander takes in the natural sciences, 

 which I have no doubt will receive additional encouragement in the 

 new position which he has won by his hydrographic and scientific 

 qualifications. 



The skull resembles that of Callocephalus hiapitlus and Pagophilns 

 groenlandicus in the dilatation of the front part of the lower edge of 

 the lower jaw ; but it agrees with Callocephalus hitpidua most in 

 the greater development of the face, and in the concave edge of the 

 hinder part of the palate. 



It differs from these skulls — 



1 . In the dilatation of the lower jaw not being extended so far back, 

 only occupying the first two-fifths of the length o( the jaw ; while 

 in the other two species it occupies full half the length of that bone. 



2. In the sides of the lower jaw being much wider apart, and 

 arched outwards, making the space between them much wider be- 

 hind, agreeing in this respect with Pkoca barbala. 



3. In the front of the lower jaw being thick and swollen, and with 

 only a slight ridge on the middle of the lower edge in front, and 

 the jaws in this part being well separated from each other, not thin, 

 concave inwardly, and with a well-developed inferior edge on the 

 inner sides, those of the two sides of the jaws being parallel and 

 near together in the centre. The angle at the hinder lower edge of 

 the lower jaw is much more produced, and with a more promi- 

 nent tubercle, than in either Callocephalus hispidus or Pagophilus 

 groenlandicus. 



4. The hinder edge of the palate being concave forwards, and not 

 straight and transverse as in Pagophilus, nor angularly cut out as in 

 Callocephalus. 



Ann. &; Mag. N. Hist. Ser.3. To/, xiv. 20 



