660 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
oblique, its width at angle .7 its length; maxillary reaching vertical through middle of head, its 
length contained 1.8 times in head; teeth minute, equal, arrow-shaped at tip, in a broad band in pre- 
maxillaries, where they reach angle of mouth; mandible wholly included anteriorly and laterally, its 
teeth not opposed to those in upper jaw; mandibular band narrower and shorter; no trace of a man- 
dibular barbel; suborbital wide, its vertical width below middle of orbit contained 6.5 times in head and 
equaling greatest width of the dilated preopercular limb; distance from hinder margin of orbit to pre- 
opercular angle equal to half length of head; the middle of length of head falls behind orbit a distance 
equaling half diameter of pupil; the front margin of nape is midway between tip of snout and front 
of dorsal ; two ribs diverge from upper anterior opercular angle, the upper low and flat, passing hori- 
zontally backward to end in a flat spinous point, the lower passing backward and downward, much 
narrower and stronger, and terminating in a definite narrow spine; rarely a trace of a third rib above 
the upper one described; when present, it is found only on dissection, and terminates far in advance 
of the upper spine; posterior portion of interopercle forming a narrow lobe which projects downward 
and backward beyond preopercle. Gill-membranes joined anteriorly, and forming a free fold across 
isthmus, with which they are not connected; anterior end of gill-slit behind orbit; width of fold half 
as long as eye; branchiostegals 7; gill-arches all containing double series of filaments, the fourth with 
a short slit behind it; outer gill-rakers long and slender, 6+22 in number; few very small pseudo- 
branchial filaments; hypercoracoid perforate near middle of its height; origin of dorsal fin slightly in 
advance of pectorals. 
Rays of the first dorsal are so badly broken in the type'that nothing can be said of their char- 
acter. In a cotype, 267 mm. long, from the same locality, the rays are seen to be very slender and 
fragile, all simple, apparently none of them produced, the second but little more than -j- length of head. 
The 2 dorsals are closely contiguous; second dorsal higher than anal, but all the rays are injured; vent 
separated by its own diameter from front of anal, which is vertically below eighth ray of second 
dorsal; pectoral long and narrow, the second ray produced beyond the others, reaching to opposite 
fourth or fifth anal ray, equaling distance from tip of snout to upper angle of preopercle; outer ventral 
ray elongate, nearly reaching vent, -f length of head. 
Scales unarmed, thin, fallen over the greater part of all the specimens; they are very finely con- 
centrically striated, the striae very finely granular; lateral line not positively determined; anteriorly, 
it seems to be represented by a series of distant pores parallel with back along upper line of division 
in body musculature; but this may not be its true position; 5 scales are present between this line and 
base of anterior ray of second dorsal; 21 in a series upward and backward from first anal ray to base of 
