170 TRIGLID^. 



Cottus uncinatus, Tem/n. S)- Schley. Faun. Japon. Poiss. p. 38 (not 

 Reinh.). 



D. 8 I 19. A. 17. 

 Teeth on the vomer and the palatine bones. The space between 

 the eyes is concave, and its width equals their diameter. Four prae- 

 opercular spines, the upper of which is long, with the point curved 

 upwards. Body covered with nimierous minute granulations or 

 prickles; a series of tubercles along the lateral line. Across the 

 back four black bands, the last occupying the base of the caudal ; a 

 black spot at the base of the pectoral and the first dorsal ; the rays 

 of all the fins dotted with brown. 



Coast of Japan ; mouth of the Yangtsee-Kiang-Kew, in the north 

 of China ; Philippine Islands. 



2. Centridermichthys asper. 



Cottus asper, Richards. Faun. Bor. Arner. Fishes, pp. 295, .313. pi. 95. f. 1. 

 Trachidermus richardsoni, Heckel, Ann. Wien. Mas. 1840, li. p. 162. 

 Centridermichthys asper, Richards. Voy. Sidph. Fishes, p. 74. 

 Cottopsis asper, Girard, Proc. Bast. Soc. Nat. Hist. iii. 1850, p. 303, 



and Nouv. Mem. Soc. Helv. Sc. Nat, xii. 1851, p. 185, and U. S. 



Pacif. R. R. Exped. Fishes, p. 51. 



D. 9-10 I 21-22. A. 17. V. 1/4. Ccec. pylor. 5. 



Gill-openings separated beneath by an isthmus. Three pra^oper- 

 cular' spines, the upper of which is the longest, covered by the skin, 

 and with the point curved upwards. Crown with very small Avarts ; 

 back of the body with very minute spines. YeUowish-brown, with 

 black spots and dots. 



Fresh waters of the Oregon and Washington Territories. 



3. Centridermichthys gulosus. 



Cottopsis gulosus, Girard, Proc. Acad. Nat. Sc. Philad. 1854, p. 129, 

 and U. S. Pacif, R. R. Expcd. Fishes, p. 35. 



B. 6. D. 9 I 18. A. 14-15. V. 1/4. 

 Gill-openings separated beneath by an isthmus. Three prscoper- 

 cular spines, the upper of which is the largest, nearly entirely hidden 

 by the skin, and A^dth the point curved upwards. Skin smooth, 

 except on a space immediately behind the pectorals, which is covered 

 with very minute spines. The lateral line falls abruptly below the 

 extremity of the soft dorsal. Reddish-brown, irregularly spotted 

 with black ; fins blackish-brown, caudal and pectorals variegated 

 with black. (Gir,) 



Fresh waters of California. 



4. Centridermichthys parvus. 



Cottopsis parvus, Girard, Proc. Ac. Nat. Sc. Philad. 1854, p. 144, and 

 U. S. Pacif. R. R. Exped. Fishes, p. 54. 



B." 6. D. 8 I 21. A. 15-17. V. 1/4. 

 Gill-openings separated beneath by an isthmus. Jaws equal. 

 Prseopercular spines very inconspicuous. Skin generally covered with 



