178 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT, 
dorsal. The tip of the ventrals is black. The upper edge of the spinous dorsal fin is also 
black. 
Plate XXVI, fig. 11, represents the young of Embiotoca ornata, size of life, as taken within 
the body of its parent, from the bay of San Diego, California. 
List of specimens. 
Catal. 
No. 
No. of 
spec. 
Sex and 
age. 
^Locality. 
When 
collected. 
Whence obtained. 
Nature of 
specimens. 
Collected by— 
541 
i 
Adult... 
San Diego, Cal. 
1853 
Lt. W. P. Trowbridge.. 
Alcoholic.. 
A . flassjiHy , , 
542 
i 
• .do•••. 
S. Farallones, Cal... 
1854 
543 
i 
1854 
6. EMBIOTOCA PERSPICABILIS, Grd. 
Plate XXXII & Plate XXVI, Figs. 1 & 2. 
Spec. Chau. —Body sub-elliptically elongated. Frontal region gently declivous. Eyes of medium size. Posterior extremity 
of maxillary not quite reaching the anterior rim of the orbit. Anal fin long, its anterior undivided rays longer than the rest, 
and its origin situated opposite the twelfth articulated ray of dorsal. Tips of pectorals reaching vertical line intersecting base 
oflast dorsal spine. Five branchiostegal rays. Sixty-three scales in lateral line. Deep purplish brown above, lighter beneath. 
Flanks with light narrow longitudinal stripes intersecting the point of union of rows of scales. Dorsal, caudal, anal, and 
ventral fins reddish purple ; pectorals yellowish. 
Syn. —Embiotoca perspicabilis, Grd. in Proc. Acad. Nat. Sc. Philad. VII, 1855, 321. 
There is still another species most closely allied to E. lineata, differing from it by a more 
elongated body, a longer anal fin which is inserted more posteriorly in its relations to the 
dorsal. The shape of the anal fin, again, is likewise different, being concave upon its outer 
margin and much deeper anteriorly where only nine undivided rays are observed. The eyes 
are proportionally larger and the ventral fins situated more backwards. The same general 
features will distinguish this species from E. ornata. 
The frontal region forms a continuous curve with the dorsal outline, being, consequently, 
much less prominent than in both E. lineata and E. ornata. The head constitutes a little less 
than the fourth of the entire length. The eye, which is large and circular, enters four times 
and a half in the length of the side of the head. The posterior extremity of the maxillary 
almost reaches a vertical line drawn in advance of the .orbit. There are five branchiostegal 
rays on either side. 
The greatest depth of the body is rather more than one third of the entire length. The 
peduncle of the tail is of medium development. A line drawn vertically downwards from the 
origin of the dorsal fin would intersect the middle of the base of the pectorals. The spinous 
portion of that fin (dorsal) is gradually rising from the first to the eighth spine, and occupying 
three sevenths of the base of the whole fin. The articulated portion is anteriorly twice the 
height of the last spine; it gradually diminishes posteriorly. The rays composing it bifurcate 
twice. The caudal is broadly developed, forked, and its rays highly subdivided, since divisions 
of the sixth degree may readily be observed. The origin of the anal is situated opposite the 
twelfth articulated ray of the dorsal; its anterior undivided rays being longer than the rest and 
gradually diminishing from forwards backwards; the external margin of that fin assumes a 
concave outline. Its base is comprised a little over six times in the entire length, instead of 
