18 



ZOOLOGY. 



List of specimens. 



VIII. FAMILY SCOMBRIDAE. 



25. TRACHURUS SYMMETRICUS, Grd. 

 General Report upon Fishes. 



Head forming the fourth of the total length ; posterior extremity of maxillary extending to 

 the anterior rim of the orbit. Shields of lateral line smallest upon its bent, under the ante 

 rior third of the second dorsal. Greenish brown above, lighter on the sides, silvery beneath ; 

 a brownish black blotch at the superior and posterior angle of the opercle ; fins unicolor. 



There is, as yet, no vernacular name to designate this fish. 



List of specimens. 



IX. FAMILY BLENIDAE. 



26. BLENNIUS GENTILIS, Grd. 



PLATE XX Va, fig. 4 General Report upon Fishes. 



A small canine on each side of the upper jaw. A supraorbital membranous flap. A slight de 

 pression between the spinous and the soft portions of the dorsal fin. Lateral line terminating 

 under the eleventh spiny ray. Ground color yellowish brown, maculated with purple. 



This is a &quot;blenny,&quot; unknown to the Californian settlers. 



List of specimens. 



27. GUNNELLUS ORNATUS, Grd. 



PLATE XXV6, figs. 6 and 7. General Report upon Fishes. 



Dorsal and anal fins contiguous to the caudal ; anal spines, two ; ventrals reduced to two ex 

 ceedingly small spines. Head quite small. An occipito-ocular dark vitta continued vertically 



