32. COITUS. 155 



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

 Philacl. 1859, p. 165 &c. 



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



Cottus et Acanthocottus, Girard, Monograi)li of the Cottoids in Smith- 

 son. Contrib. Knowl. iii. 1852. 



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

 Paeif. R. R. Exped. Fishes, p. 62. 



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

 compressed posteriorly ; head and body covered with a soft and 

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

 Pectoral rounded, 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 Notothenia and Harjpagifer ; inhabiting the northern 

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

 Fresh waters of Europe, Northern Asia and North America. 



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



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



merine teeth. 



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



I. With vomerine teeth. 



II. Without vomerine teeth. 



3. Cottus marmoratus, Cuv. S( Val. viii. p. 497. — Eamtschatka. 



4. villosus, Pall. Zoogr. p. 129 ; Cuv. (^ Val. iv. p. 196.— Kamtschatka. 



5. aeneus, Mitchill, Trans. Lit. St Philos. Soc. New York, i. p. 380 ; 



Cuv. 8f Val. iv. p. 189; Sforer, lie]}. Mass. p. 20; Behay, New York 

 Faima, Fishes, p. 52. pL 6. f. 19. — Coast of New York. — Ten anal rays, 

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

 but the figui'e, given by the same author, represents thirteen (!). 



6. scorpioides, Fabric. Faun. G-ronl. 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. meridionahs, 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. Amcr. Assoc. Adv. 

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



9. viscosus, Haldcm. Suppl. Monogr. Limn. ^c. 1840, p. 3 ; Girard, 



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

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

 f. 1-9. — Pemisylvania and Maryland. 



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



1 1 . Acanthocottus ocellatus, Storer, Bost. Journ. vi. p. 253. — Labrador. 



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



Eehring's Straits. 



13. Porocottus t quadrifiUs, Gill, I.e. — Behring's Straits. 



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



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



t A single hooked prreopercular spine is attributed to this species ; but it is 

 not evident whether the spine is simply cui-ved. or provided with an antler-like 

 Di'ocess. 



process 



