93. EMBIOTOCIDJ*: — HYPSURUS. 
593 
933. A. lirjjeHteus Agassiz. — Surf-Jish. 
Silvery ^sides with narrow vertical bars of a brassy olive color, alter- 
nating with vertical series of spots of similar color; fins plain; vertical 
fins sometimes edged with dusky. Mouth comparatively large, little 
oblique, the premaxillary being below the level of the rather small 
eye. Body ovate, the back elevated ; ventral outline straightish. 
Head blunt and deep. Lips rather thin, the lower with a frenum. 
Gill-rakers few, rather short, stiff; lower pharyngeals normal. Caudal 
Ijeduncle short and stout. Head 3i; depth 2^. D. X, 24; A. Ill, 20; 
Lat. 1. 65. Vertebrm 13 + 18. L. 1 loot. Coast of California; very 
abundant. 
(L. Agassiz, Amer. Journ. Sci. Arts, 1854, .367; Girard, U. S. Pac. R. R. Surv. Fish. 
201: Ditrema argenteum Gunther, iv, 251: Amphistichus similis Girard, U. S. Pac. R. R, 
Surv. Fish. 203.) 
311.— HYPSURUS A. Agassiz. 
(Alex. Agassiz, Proc. Post. Soc. Nat. Hist. 1861, 133 {nomen nudum)-, type F'm5iofoca 
caryi L. Agassiz.) 
Body oblong, compressed, moderately elevated, tapering abruptly to 
a very slender and short caudal peduncle. Head moderate, rather 
acute, lower jaw included. Lips moderate, the lower with a frenum. 
Teeth feWj conical, blunt, in one series, those of the upper jaw some- 
times partly in 2 series. Gill-rakers slender, rather short. Pharyn- 
geals normal. Dorsal fin rather low, the spines all lower than the solt 
rays. Caudal broad and short, widely forked. Anal fin extremely short, 
although many rayed, beginning far back, the length of its base being 
less than half the distance between its first spine and the root of the 
ventrals, the abdomen being therefore extremely long. Scales rather 
small. Vertebrm 17 -j- 20. This genus is distinguished from Ditrema 
chiefly by the great length of the abdominal region. Species of small 
size and brilliant coloration, (yi/'q high; tail.) 
934. H. caryi (Louis Agassiz) Alexauder Agassiz. — Bugara. 
Coloration extremely variegated, olivaceous, with stripes of orange 
between the rows of scales; about 13 dusky orange cross bars, irregular 
in form; eyes reddish, surrounded by a sky-blue band; membranes of 
opercles chiefly orange; opercle bluish, spotted with orange; sides of 
head with sky-blue spots; lower jaw with orange and bine stripes; 
breast and belly with longitudinal stripes of bright orange, alternating 
with steel-blue; abdominal furrow orange, edged with blue; pectoral 
with an orange crescent at base bordered with light blue; soft dorsal, 
Bull. Xat. Mus. Xo. 16 38 
