NO. 1263. JAPANESE TRACHINOID FISHES— JORDAN AND SNYDER. 477 
Head very large, deeper and broader than the body, flat above, the 
.sides vertical; eyes placed on top of head, directed upward, the diam- 
eter of orbit equal to length of snout; mouth vertical; lips with prom- 
inent transverse ridges, the edges and ends of which are covered with 
small papilla?; a rather broad band of small teeth on upper jaw: a 
single row of widely separated, fiat, sharp teeth on lower jaw; large 
plates with villiform teeth on vomer. Pseudobranchiw very small; 
gill rakers absent, the first arch with minute, bony set^; anterior and 
posterior nostrils with large, low, fringed tubes; opercle with a large 
flap posteriorly, the upper part with fringed filaments; two fringed 
flaps, the upper part of which is much the larger, above base of pec- 
toral; their edges meeting, cover a deep depression, forming a tube 
leading from gill chamber: top of head with slightly rugose plates; 
depression between eyes very broad, the plates on either side narrow, 
pointed anteriorly; upper parts of preopercle and opercle with exposed 
rough plates; no spines. 
Scales small, thin, embedded, arranged in oblique rows, the occiput, 
breast, belly, and head naked; lateral line high up on body near base 
of dorsal fin. 
Spinous dorsal absent, there being Init one weak spine before the 
soft rays; 2 or 3 anterior rays not branched; anal inserted below 
second or third dorsal ray, extending a little farther posteriorly than 
the dorsal; caudal convex posteriorly; pectoral large, the fifth and 
sixth rays longest, the rays below graduallj^ shorter. Ra3^s of anal, 
ventral and of lower part of pectoral much enlarged, fleshy, and with 
wrinkled skin near the tips. 
Color in spirits, upjDcr parts of body including the dorsal fin brow- 
ish, with round, white spots about as large as the orbit, those on dor- 
sal in a row along basal part of fin, those on bod}' in 2 rows, a third 
represented by 2 or 3 spots; head plain brownish above except oper- 
cles and preopercles, which are yellowish white, and the interorbital 
depression where the skin is covered with small, round, white spots; 
caudal dusky with elongate, light spot on its upper half; anal and 
pectorals dusk}-, bordered with yellowish white. 
Described from a specimen about 300 millimeters long from Ono- 
michi. We have other examples from Wakanoura and Hakata. 
Coast of southern Japan and southward, rather rare. 
(Named for LeBeck, '"ardentissimo historian naturalisamatori," who 
figured for Bloch the dolphins of the Ganges.) 
7. GNATHAGNUS Gill. 
Gnathagnus Gill, Proc. Ac. Nat. Sci. Phila., 1861, p. 115 {elongatus). 
Head largely bon}^ above, the bones separated by smooth intervals; 
preopercle with bony cross-ridges, but no sharp spine; no prominence 
at its angle; opercle broad, with radiating striie, its edge not fringed;. 
