122 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY-GENERAL REPORT. 
than the insertion of the caudal; the rays of which it is composed are all soft, articulated, and 
branched. It increases slightly in depth from its origin to its terminus. The caudal fin is 
slender, being enclosed for half its length by both the dorsal and anal fins. The pectorals are 
small and sub-ovoid in shape. 
Br. VI: VI; D XXV, 42 ; A 42 ; C 2, 1, 7, 6, 1, 2 ; VO; P 10. 
The scales are very small, imbedded, not imbricated; they are elongated, narrowest anteriorlyj 
exhibiting concentric striae, hut no diverging grooves. The entire head is smooth and scaleless. 
The lateral line, from the upper and posterior angle of the opercle, ascends by a gradual curve, 
extends along the upper region of the hack, nearer the base of the dorsal than the middle of the 
flanks, and terminates before it reaches the caudal fin. It is composed of two irregular parallel 
rows of pores in communication with a main tube. Prom the origin of the lateral line, near 
the thoracic belt, a series of pores proceeds along the temporal region, and when half way it 
bifurcates, one series going to the occiput, the other to the orbit, which it surrounds. Another 
series extends along the limb of the preopercle and dentar hone (lower jaw). 
The anterior portion of body and head is of a uniform deep brownish violet; the posterior 
portion exhibits a somewhat more brownish hue, over which is spread a violaceous tint; the fins 
are all deep violet. A deep purplish violet crescent-shaped vitta extends from either eye to the 
occiput. Two oblique vittse on the sides of head, margined with a white filet, start, one from 
the anterior rim, the other from the posterior half of the orbit to the branchiostegal apparatus. 
References to the figures. —Plate XXV b, fig. 4, represents Cebidichthys violaceus, size of life, 
from Monterey, California. Fig. 5 is an enlarged view of a scale taken upon the middle of the 
flanks. 
List of specimens. 
Catal. 
No. 
No. of 
specs. 
Sex and 
age. 
Locality. 
When col¬ 
lected. 
Whence obtained. 
Orign’l 
No. 
Nature of 
specimens. 
Collected by— 
497 
i 
Adult.. 
San Francisco, Cal_ 
1856 
Dr. W. O. Ayres_ 
28 
Alcoholic - 
Dr. Ayres_... 
498 
2 
Young. 
Monterey, Cal._ 
1855 
A. S. Taylor, Esq_ 
A. S. Taylor- 
499 
1 
_do_ 
San Luis Obispo, Cal_ 
1853 
Lt. W. P. Trowbridge. 
. 
_do_ 
Lt. Trowbridge.. 
500 
2 
_do_ 
Fort Steilacoom, W. T.. 
1854 
Gov. I. I. Stevens_ 
_do_ 
Dr. G. Suckley.. 
501 
1 
...do_ 
Sands of Monterey beach 
1856 
A. S. Taylor, Esq- 
A. S. Taylor_ 
LUMPENUS, Reinh. 
Gen. Char. —Body very elongated, compressed, or sub-cylindrical. Head moderate; snout sub-conical; mouth moderate. 
Canine and card-like teeth upon the jaws ; card or velvet-like teeth upon the palatines. Vomer toothless. Tongue smooth. 
Branchial apertures continuous under the throat. Dorsal rays all spinous; anal rays all soft. Caudal lanceolated not contiguous 
to either the dorsal or anql. Ventral fins slender, inserted under the throat, in advance of the base of the pectorals. Pectorals, 
large, fan-like. Scales quite small ; lateral line inconspicuous. 
Syn. — Lumpenus, Reinh. in Overs. Vidensk. Selsk. Forh. 1835-’36.— Kroyer, in Kong. Danske Vidensk. Selsk. Naturw. 
og Mathem. Afhandl. VII, 1838, 194 ; &, Danm. Fiske. I, 1840, 332.— Nilss. Skand. Faun. IV, 1852, 190. 
Leptognnnellus, Ayres, in Proc. Cal. Acad. Nat. Sc. 1, 1855, 26. 
Species of this genus are not uncommon in the northern seas. Many years ago a tolerably 
good figure was given of one of them by Walbaum in his edition of Artedi’s “ Grenefa of 
Fishes,” under the name of Blennius lampraetiformis (Blennius islandicus, Mohr.)-. Several 
