32. C0TTTJ9. 161 



which is the least developed ; the two others form together a concave 

 longitiidinal groove. There is a M-ide channel, completely closed, 

 along all the longitudinal axis of the bone. 



Thirty-five vertehrce ; the extent of the abdominal portion cannot 

 be ascertained in the present skeleton. 



10. Cottus groenlandicus. 



Cottus scorpius, Fabric. Faun. Grcenl. p. 156; Faber, Fische Islands, 



p. 120. 

 gi'oenlandiciis, Cut: S,- Val. iv. p. 1-5(3 ; Richards. Faun. Bor. 



Amer. iii. pp. 46, 297. pi. 95. f. 2 ; Storer, Rep. Mass. p. 16 ; Dekay, 



New York Fauna, Fishes, p. 54. pi. 4. f. 10. 

 ? Cottus porosus, Cuv. ^- Val. viii. p. 498; Richards. Faun. Bor. Amer. 



Fishes, p. 47. 

 Cottus variabilis, Ayres, Proc. Bost. Soc. Nat. Hist. 1842, p. 68, and 



Bost. Journ. iv. 1843, p. 259. 

 Acautbocottus variabilis, Gir. Bost. Journ. vi. p. 248. 



D. 10 I 16. A. 12-13. Cfec. pylor. 7. 



Two small spines above the snout: four more or less obtuse 

 tubercles on the crown ; the quadrangular space between them 

 rather longer than broad ; three prseopercular spines, two of which 

 are at the angle ; the upper one is the longest, rather less than the 

 width of the eye. The height of the first dorsal is less than the 

 length of the masiUaiy bone; the ventral terminates at a great 

 distance fi-om the vent ; the pectoral does not reach to the origin of 

 the anal. Skin above the lateral line generally with granulated 

 plates. The fii'st dorsal blackish, marbled with lighter, and with a 

 whitish posterior margin ; the soft dorsal and anal with broad oblique 

 brown bands, the caudal with vertical ones. 



Ai-ctic Seas of America. 



Yar. a. Sides of the belly with large white spots. 



a. Large specimen. Banks of Newfoundland. From the Haslar 



Collection. 

 h. Large specimen. Banks of Newfoundland. From the Haslar 



Collection. 



c. Adult. From the Haslar Collection. 



d. Very large specimen : stuffed. Greenland. 



Var. /3. Sides irregularly marbled. 



e. Large specimen. Boston. Presented by W. Winstone, Esq. 



/, g. Adiilt : dried. Greenland. Presented by the Zoological 



Society. 

 h. Half-grown : dried. 



11. Cottus pachypus. 

 D. 9 I 16. A. 12 (-14). 

 Two small spines above the snout, an obtuse one above each orbit, 

 and a pair of obtuse prominences on the occiput. The impression 



VOL. II. ^ 



