21. CENTRONOTUS. 289 



small bony warts at the place of the vcntrals ; caudal distinct, but 

 united with the dorsal and anal fins. Brownish-olive, marbled with 

 yellowish. 



Coast of Kamtschatka. Aleutian Islands. 



Typical specimen in the Berlin Museum. 



7. Centronotus alectrolophus. 



Blennius alectrolophus, Pall. Zoogr. Rosso-Asiat. p. 174. 

 Guuellus alectrolophus, Cm; i^- Val. xi. p. 447. 



D. 63. A. 44. 



Ventral fins none. Crown of the head with a longitudinal crest ; 

 jaws equal in length. Caudal distinct ; pectoral fins very small. 

 Brownish : dorsal fin with oblitiue streaks ; anal and caudal with 

 wa\"ing linos. 



Island of Talek (Gulf of Ponshin). 



8. Centronotus crista galli. 

 D. 54. A. 37. 



Ventral fins none. Crown of the head with a longitudinal crest ; 

 jaws equal in length. Caudal not continuous with the other vertical 

 lins ; jiectorals rather small. Brownish-olive, marbled with darker ; 

 sometimes a series of whitish spots along the base of the dorsal fin ; 

 cheek with an oblique brownish, dai-ker-edged band. 



Coast of Vancouver Island. Gulf of Georgia. 



a,h. Vancouver Island. From Lieut.-Colonel Hawkins's Collection. 

 c, d. Eraser's Eiver. Voyage of H.M.S. Plumper. 



Description. — ^The body is elongate, compressed, its greatest depth 

 being one-eighth of the total length. The head is higher than broad, 

 and its length is contained six times and a half in the total length. 

 The snout is of moderate extent, with the jaws equal anteriorly ; 

 the cleft of the mouth is oblique, the maxiEaiy reaching to behind 

 the middle of the eye ; the diameter of the eye is one-seventh of the 

 length of the head, and shorter than the snout ; nostril with a very 

 small tentacle ; a membranaceous crest extends from the end of the 

 snout to the nape of the neck. Series of very distinct pores run 

 round the eye, along the edge of the prseoperculum, and along the 

 upper margin of the operculum. The dorsal and anal fins are nearly 

 half as high as the body, and terminate immediately at the root of 

 the caudal fin ; caudal rounded, rather small ; pectoral half as long 

 as the head. 



The scales are very small, scarcely visible ; lateral line none. 



lines. 



Total length 45 



Height of the body 5| 



Length of the head 7 



Diameter of the eye 1 



TOL. III. V 



