594 COXTRIBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 
with a black blotch near the front; caudal of a peculiar rich orauge- 
browu, with cross-bars formed of round grayish spots; anal chiefly 
orange tiijped with blue, and with a large blackish blotch; other fins 
orange-brown, mottled. Body elliptical, compressed, the ventral outline 
comparatively straight. Snout sharp ; premaxillaries on the level of 
the lower margin of pupil. Fourth to sixth dorsal spines highest; 
higher than the soft rays. Pectoral long. Anal very short; its rays 
slender and crowded; its origin opposite posterior third of dorsal. 
Head 3i; depth 2i. D. X, 23; A. Ill, 24; Lat. 1. 71. L. 10 inches. 
Coast of California; very common from Santa Barbara to San Fran- 
cisco; a beautiful fish, largely used for bait. 
{Embiotoca caryi Agassiz, Amer. Journ. Sci. Arts, 1853, 389, anti 1854, 366: Diirema 
caryi Gtlnther, iv, 247.) 
. 312.— DITREIUA Scblegel. 
Surf-fishes. 
(Embiotoca Agassiz: FJianei'odon Girard: Tcmiotoca A\e:si. Agassiz.) 
(Scblegel, Fauna Japou. Poiss. 77, 1850: type Ditrema temmincU Bleeker, from Japan.) 
Body oblong, compressed, more or less elevated, with the caudal 
peduncle robust or rather slender. Head moderate, lower jaw in- 
cluded. Lips moderate, the lower with a freuum. Maxillary short, its 
whole length slipping under the preorbital. Teeth few, conical, blunt- 
ish, in one series. Gill-rakers weak, rather short and slender. Pharyn- 
geals normal. Caudal fin lunate or forked; anal fin rather long, much 
longer than abdomen, its spines small. Scales small, about GO in the 
lateral line. Species 5, differing in external appearance, but alike in 
essential characters. The Japanese type of this genus is closely re- 
lated to Ditrema atrijjes. two; aperture.) 
a. Caudal peduncle stout, tbe tin not widely forked. {Embiotoca* Agassiz.) 
935. D. laterale (Agassiz) Gtbr . — Blue Perch ; Surf-fish. 
Color reddish olive above, becoming bright orange red below, every- 
where thickly dusted with black iioiuts; a continuous bright blue streak 
along the edges of each row of scales; streaks of thoracic region formed 
by isolated blue spots on the middle of the scales; head with several 
series of blue spots and streaks ; fins all olivaceous dusky ; ventrals 
with some light orange. Body oblong, compressed, with a short and 
very high caudal peduncle, the body tapering backward less than usual. 
*Ag.assiz, Ainer. Journ. Sci. Arts, 1853, 387: type Embiotoca jaclcsoii Ag. {e/j^io?, 
bfewitbiu; ro«o5, offspring.) 
