COTTID.E. 351 



end, and having above and below them smaller pores, seem- 

 ingly connected with the main line by tubular branchlets. 

 The inferior row of marks in fig. 2 represent short cutaneous 

 folds, corresponding to the points of the ribs. There are no 

 scales nor bony plates on any parts of the skin. 



The body is clouded, as represented in the figure, with bars 

 on the fins; and there are many small white spots, just per- 

 ceptible to the naked eye, scattered over the sides. A lens 

 shows the dark places to be marked with crowded black dots. 

 No teeth on the palate bones. 



Dimensions. 



Total length, including caudal 4'45 inches. 



Length of head to tip of op erculum 1 - 30 



Length from premaxillary (retracted) to anus . . . 1'SO 



Breadth of head at gill openings 0'70 



Height of head there 0'62 



This fish was taken in Northumberland Sound, in lat. 76 

 53' N., in nine fathoms water, on a gravelly bottom, the tem- 

 perature of the air being at the time of capture 28 Fahr. 



I have endeavoured to obtain specimens of the Coitus polaris 

 of Sabine, discovered in abundance on the shores of North 

 Georgia in pools of water left by the ebbing tide ; but the 

 search that was instituted, at my request, in the Museum of the 

 Zoological Society and in the British Museum was without 

 success. It appears however to be sufficiently characterized 

 as distinct from C. glacialis by the small number of rays in 

 the dorsals (6/-13), and the five rays in the ventrals, though 

 in other respects there is no marked discrepancy between. 

 Colonel Sabine's description and the above of glacialis. 



In many particulars C. porosus of M. Valenciennes, brought 

 from Davis's Straits, answers to our fish, and but for the spine 

 in the second dorsal, the inferior opercular spine, and especially 

 the gibbous back particularized in his description, I should 

 have considered them to be one species. I have seen neither 

 figure nor specimen of C. porosus. 



