FISHES—EMBIOTOCOIDAE—EMBIOTOCA WEBBI. 
173 
Fig. 3, a scale from the dorsal region. 
Fig. 4, a scale from the lateral line. 
Fig. 5, a scale from the abdominal region. 
Figs. 3, 4, and 5 are magnified. 
Plate XXVI, fig. 12, represents the young, taken in the open water of the Bay of San Diego, 
California. 
List of specimens. 
Catal. 
No. 
No. of 
spec. 
■ 
Sex and 
age. 
Locality. 
When col¬ 
lected. 
Whence obtained. 
Nature of 
specimens. 
Collected by— 
544 
600 
5 
1 
Adult.. 
Young. 
San Diego, Cal_ 
1853 
1853 
Lt. W. P. Trowbridge. 
Alcoholic. 
A. Cassidy_ 
3. EMBIOTOCA WEBBI, G r d. 
Plate XXX. 
Spec. Char. —General form ellipsoid. Frontal region sub-concave ; occiput prominent. Anal undulated upon its external 
margin, its origin being opposite the fifth articulated ray of the dorsal. Tip of pectorals reaching the vertical of the third 
articulated ray of dorsal fin. Eyes above the medium size. Posterior extremity of maxillary extending to a vertical line 
drawn at the anterior rim of orbit. Branchiostegals, five on right side, six on the left. Fifty-four scales in the lateral line. 
Olive brown, with indistinct purplish blotches. 
Syn .—Embiotoca webbi , Grd. in Proc. Acad. Nat. Sc. Philad. VII, 1855, 320. 
This species is closely allied to the preceding, the differences consisting in the shape of the 
head, the cleft of the mouth, the proportional height of the dorsal fin, the insertion of ventrals 
and anal, the extension of pectorals, and shape and structure of the scales. 
The snout is obtuse ; the posterior extremity of the maxillaries corresponds to a vertical line 
intersecting the anterior rim of the orbit. The eye is large and circular, a little smaller than 
in E. cassidii , being intermediate in size between the latter and E. jacksoni. The posterior 
convexity of the opercle is less prominent than in E. cassidii , being also provided with one more 
row of scales upon its surface. The rows of scales upon the cheeks do not vary in either of 
the species so far described. 
The origin of the dorsal fin is exactly opposite the anterior extremity of the base of the 
pectorals. The spinous portion constitutes three-sevenths of the length of the base of the 
whole fin. The membrane uniting the spines is more emarginated than in E. cassidii , and the 
soft portion is anteriorly more elevated than in the latter. The articulated rays of the fin 
bifurcate but twice. The caudal holds the same relations towards the total length as in E. 
cassidii , but its rays bifurcate only three times. The anal has the same structure : three spines, 
ten undivided, and fifteen divided rays, the divisions observed being of the first, second, and 
third degree. The anterior spine is situated opposite the fifth articulated ray of the dorsal fin. 
The insertion of the ventrals is under the fourth dorsal spine. The articulated rays of these 
fins sub-divide three times. The tips of the pectorals extend backwards as far as the third 
articulated ray of the dorsal ; their rays are thrice bifurcated. 
