170 TRIGLIDJE. 



Cottiis uncinatus, Teiiiin. ^ Schleg. Faun. Japan. Poiss. p. 38 (not 

 Rei7ih.). 



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 numerous minute granulations or 

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

 back foiu" 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 aU. the fins dotted with brown. 



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

 of China ; PhHipprue Islands. 



2. Centridermichthys asper. 



Cottus asper, Richards. Faun. Bor. Amer. FisJies, pp. 295, 313. pi. 95. f. 1. 

 Trachidermus richardsoni, Heckel, Ann. Wien. Mm. 1840, ii. p. 162. 

 CentrideiTiiichthys asper, Richards. Voy. Sulph. Fishes, p. 74. 

 Cottopsis asper, Girard, Proc. Post. 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. Caee. pylor. 5. 



GUI-openings separated beneath by an isthmus. Three prseoper- 

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

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

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

 black spots and dots. 



Fresh waters of the Oregon and Washington Territories. 



3. Centridermichthys gulosus. 



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

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



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

 GUI-openings separated beneath by an isthmus. Three prseoper- 

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

 by the skin, and with the point curved upwards. Skin smooth, 

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

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

 extremity of the soft dorsal, lieddisih-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. 

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

 Praeopercular spines very inconspicuous. Skin generally covered with 



