FISHES OF SEW YORK 709 



Uniform reddish brown; cirri and tips of ifins red. Greenland. 



The silvery rocklin^, or mackerel midge, inhabits the coast of 

 Oreenland, and extends southward probably as far as Long 

 Island, the young having been taken in Vineyard sound. 



354 Gaidropsarus ensis (Eeinhardt) 

 Rockling 



Motella ensis Reinhardt, Dansk. Vidensk. Selskrift. Afh. VII, 15, 1838, 



Greenland. 

 Onos rufus Gill, Proc. U. S. Nat. Mus. 259. 1883, Gulf Stream; Proc. Ac. 



Nat. Sci. Phila. 172, 1884. 

 Onos ensis Gill, Proc. Ac. Nat. Sci. Phila. 241, 1863; Jordan &, Gilbert, 



Bull. 16, U. S. Nat. Mus. 797, 1883; Goode & Bean, Oceanic Ichth. 381, 



fig. 327, 1896. 

 Gaidropsarus ensis Jordan & Evermann. Bull. 47, U. S. Nat. Mus. Ill, 



2558, 1898. 



Body unusually deep, its greatest depth at vent equaling two 

 ninths of total length without caudal; head small, a little more 

 than one sixth of total without the caudal; eye rather large, 

 nearly as long as snout, equaling interorbital area, and situated 

 in first half of head; posterior margin of orbit nearly equidistant 

 from tip of snout and posterior margin of opercle; mouth normal; 

 supramaxillary ending under posterior margin of pupil; 

 teeth in a narrow band in each jaw, some of those at least in 

 outer row of upper jaw slightly enlarged and brownish colored; 

 vomerine teeth in two rows forming a short curved band; nasal 

 barbel about equal to diameter of eye; chin barbel small and 

 not much exceeding one half diameter of eye; foremost ray of 

 :flrst dorsal springing from back above opercular margin; second 

 dorsal fin low in front, but rising rapidly to seventh or eighth 

 ray, behind which it is nearly uniform for a long distance and 

 highest at posterior portion; anal fin much lower than second 

 dorsal; caudal slightly emarginate, almost truncate behind, its 

 median rays about two thirds as long as the head; pectorals 

 nearly three fourths as long as the head, produced toward the 

 upper angles, the third ray being longest; ventrals with their 

 bases mostly in advance of pectorals, the longest ray filamentous 

 and nearly equaling pectoral; lateral line obsolescent. D. 59; 

 A. 44 to 46; P. 22 to 27; V. 8. 



