18 
ZOOLOGY. 
List of specimens. 
Catalogue 
number. 
No. of 
specimens. 
Sex and 
age. 
Locality. 
When 
collected. 
Collected by— 
Original 
number 
Nature of spe¬ 
cimens. 
352 
2 
Adult. 
San Francisco, Cal._ 
1855 
Dr. Newberry_ 
Alcoholic. 
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. 
Catalogue 
number. 
No. of 
specimens. 
Sex and 
age. 
Locality. 
When col¬ 
lected. 
Collected by— 
Original Nature of speci- 
number. mens. 
[ 
488 
i 
Adult. 
San Francisco, Cal._ 
1855 
Dr. Ayres_ 
26 Alcoholic. 
IX. FAMILY BLENIDAE. 
26. BLENNIUS GENTILIS, Grd. 
Plate XXVa, 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 “blenny,” unknown to the Californian settlers. 
List of specimens. 
Catalogue 
number. 
No. of 
specimens. 
Sex and 
age. 
Locality. 
When col¬ 
lected. 
Collected by— 
Original 
number. 
Nature of speci¬ 
mens. 
489 
i 
Adult. 
Monterey, Cal. 
1853 
Lieut. Trowbridge_ 
Alcoholic. 
27. GUNNELLUS ORHATUS, Grd. 
Plate XXY6, 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 
