32. coTTUs. 155 



Boreocottus, Porocottus, et Ceratocottus, Gill, Proc. Acad. Nat. Sc. 

 Philad. 1859, p. 165 &c. 



Aspicottus, Girard, Proc. Acad. Nat. Sc. Philad. 1854, p. 130. 



Coitus et Acanthocottus, Girard, Monograph of the Cottoids in Smith- 

 son. Contrib. K?iowl. iii. 1852. 



Leiocottus, Girard, Proc. Acad. Nat. Sc. Philad. 1856, p. 133, and U. S. 

 Pacif. R. It Exped. Fishes, p. 62. 



Head broad, depressed, rounded in front ; body subcylindrical, 

 compressed posterioi'ly ; head and body covered with a soft and 

 scaleless skin ; lateral line present. Two dorsals, of moderate height. 

 Pectoral roiinded, with some or all the rays simple. Ventrals tho- 

 racic. Jaws and vomer with villiform teeth ; (vomerine teeth some- 

 times absent ;) none on the palate. Air-bladder none ; pyloric ap- 

 pendages in moderate number. 



Antipodes of Nototlienia and Harpagifer ; inhabiting the northern 

 Seas of Europe and North America, extending to the coasts of Finance. 

 Fresh waters of Europe, Korthem Asia and North America. 



The species of this genus may be arranged as foUows : — 



A. Species with a simple prseopercular spine or spines, and with vo- 



merine teeth. 



B. Species with antler-like processes at the praeopercular spine. 



I. With vomerine teeth. 

 n. Without vomerine teeth. 



3. Cottus marmoraius, Cuv. Sf Val. viii. p. 497.— Kamtschatka. 



4. villosus, Pall. Zoogr. p. 129 ; Cuv. 8f Val. iv. p. 196. — Kamtschatka. 



6. seneus, Mitchill, Trans. Lit. Sr PMlos. Soc. New York, i. p. 380 ; 



Cuv. Sf Val. iv. p. 189 ; Storer, Sep. Mass. p. 20 ; Bekay, New York 

 Fauna, Fishes, p. 52. pi. 6. f. 19. — Coast of New York. — Ten anal rajs, 

 as stated bj Dekay in the text, would be a good distinctive character ; 

 but the figure, given by the same author, represents thirteen (!). 



6. scorpioides, Fabric. Faun. Gr'onl. p. 157 ; Cuv. 8f Val. iv. p. 187. — 



Coast of Greenland. 



7. wilsonii, Girard, Smith'' s Contr. I. c. p. 42. pi. 1. f. 3 & 4, pi. 3. 



f. 14-17. — Pennsylvania. 



8. meridionaUs, Girard, Smith's Contr. I. c. p. 47. pi. 1. f. 9 & 10, and 



Proc.Bost. Soc. Nat. Hist. iii. 1850, p. 189, and Proc.Am^r. Assoc. Adv. 

 Sc. ii. 1850, p. 410. — James River (Virginia). 



9. vii ;osus, Haldcm. Suppl. Monogr. Limn. Sfc. 1840, p. 3 ; Girard, 



Proc. Amer. Assoc. Adv. Sc. ii. 1850, p. 411, and Proc. Post. Soc. Nat. 

 Hist. iii. 1850, p. 189, and Smit/ison. Contrib. I. c. p. 51. pi. 2. f. 1, 2, pi. 3. 

 f. 1-9. — Pennsylvania and Maryland. 



10. formosus, Girard, Smithson. Contrib. I. c. p. 58. — Lake Ontario. 



11. Acanthocottus ocellatus, Storer, Post. Journ. vi. p. 253. — Labrador. 



12. Boreocottus axillaris, CHll, Proc. Acad. Nat. Sc. Philad. 1859, p. 166. — 



Belu-ing's Straits. 



13. Porocottust quadrifihs, Gill, I.e. — Behring's Straits. 



14. Cottus polaris, Sabine, App. Parry's First Voyage, p. 213 ; J.C. Ross, App. 



p. 53 ; Richards. Faun. Bor. Amer. Fishes, p. 43. — Coast of Boothia. 



t A single hooked praeopercular spine is attributed to this species : but it is 

 not evident whether the spine is simply curved, or provided with an antler-like 

 process. 



