33. CENTEIDERMICHTHrS. 171 



very minute spines. The lateral line is slightly bent downwards on 

 the tail. Olivaceous : body and fins spotted with black ; a black 

 blotch on the upper and posterior portion of the first dorsal. (Gir.) 

 Fresh waters of California. 



5. Centridermichthys maculosus. 



Oligocottus maculosus, Gircird, Proc. Ac. Nat. Sc. Philad. 1856, p. 133, 

 and Journ. Bost. Soc. Nat. Hist. 1857, pi. 24. f. 7, and U. S. Pacif. 

 R. R. Exped. Fishes, p. 56. 



B. 6. D. 8 I 16-17. A. 13-14. V. 1/3. 

 Gill-openings continuous under the throat. Head with the upper 

 surface depressed and the snout veiy shelving. A stoutish bicuspid 

 process on the convexity of the prseoperculum. YeUowish-brown 

 mottled with blackish ; along the back a series of blotches of a deeper 

 hue ; the rays of the dorsal, caudal, and pectoral fins with black dots 

 arranged in bands. 



West coast of America from California to the Vancouver Islands. 

 a-f. Fine specimens. Vancouver Islands. — These specimens exhibit 

 small tentacles on the upper part of the head and along the 

 lateral line. 

 (/, h. Adult. — The skin above the lateral line is granulated. 



6. Centridermichthys analis. 



Oligocottus analis, Girard, Proc. Ac. Nat. Sc. Philad. 1857, p. 201, and 

 U. S. Pacif. R. R. Exped. Fishes, p. 57. 



D. 9 I 17. A. 13. V. 1/3. 



Gill-openings continuous under the throat. Head with the upper 

 surface depressed and the snout very shelving. Praeopercular spines 

 moderate. Dorsal fins contiguous. Dorsal region with minute 

 spines. Greenish-olive, spotted with black. {Gir.) 



Coast of California. 



7. Centridermichthys globiceps. 



Oligocottus globiceps, Girard in U. S. Pacif. R. R. Exped. Fishes, p. 58. 



D. 9 I 16. A. 12. V. 1/3. 



Gill-openings continuous under the throat. Head with the upper 



surface convex and with the snout abruptly tmncated, roimded. 



Praeoperculum with rudimentary spines. Dorsal fins separated. 



Skin perfectly smooth. Eeddish-brown, spotted with black. (Gir.) 



Coast of California. 



8. Centridermichthys armatus. 



Leptocottus ai-matiis, Girard, Proc. Ac. Nat. Sc. Phil. 1854, pp. 131, 145, 

 and 1856, p. 133, and in U. S. Pacif. R. R. Exp. Fish. p. 60. pi. 15. f. 2. 

 Acauthocottus inermis, Ai/res. 



B. 6. D. 8 I 18. A. 17. V. 1/4. 

 Gill-openings separated beneath by an isthmus. The upper jaw 

 longer than the lower ; the upper maxOlary reaches beyond the ver- 



