PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 249 
cave longitudinally; dorsal outline, from occiput to caudal pedunele, 
regularly arched, the highest point at anterior part of first dorsal; 
mandible straight; abdominal outline regularly curved. 
Greatest depth 3,5, times, depth of caudal peduncle 12, length of 
head 3, length of pectoral 444 in total length to extremity of caudal 
fin; orbit (longitudinal diameter) 54, mandible 21, interorbital width 
about 2,*, in length of head: 
Gape straight, maxillary extending to a little in front of the center of 
the pupil, its upper edge received in a groove below the preorbital for 
most of its length. 
Teeth of mandibles and intermaxillaries slender, sharp, recurved; in 
several rows in front, gradually diminishing laterally to a single row; 
front teeth slightly longer than lateral teeth. A few similar but smaller 
teeth on vomer and palatines. Upper pharyngeals with a cushion of 
similar teeth; lower pharyngeals slender, with a patch of similar teeth 
in the form of a very obtuse triangle, the internal row largest. 
Gill-rakers short, ciliated, those on the anterior aspect of the first pair 
of gill-arches longer than the others. 
Branchiostegals seven; gill-membranes continuous below, but attached 
to an isthmus throughout the entire length of their junction except the 
posterior margin. 
Nostrils just above a line joining the upper margin of the orbit with 
the tip of the snout, simple, elliptical, the posterior far the larger. 
HKyes lateral, subeliiptical, the upper margin of the orbit less curved 
than the lower; interorbital space wide, slightiy convex transversely. 
Longitudinal diameter of orbit 14 in length of snout. 
Opercular bones without spines or denticulations. 
Pectoral base vertival; pectoral broadly lanceolate, the upper margin 
curved; 5th ray longest; 4th, 6th, 7th, and 8th only slightly shorter, 
thence diminishing rapidly downwards. Tip of pectoral about vertical 
with base of 11th ray of spinous dorsal, but considerably short of the 
vent. Rays twice branched. 
Ventrals inserted a little behind pectorals, their length 12 in that of 
the pectorals. Rays twice bifureate. 
Spinous dorsal commencing about opposite 20th scale of lateral line; 
first spine very short; 2d and 3d rapidly increasing; 4th longest; thence 
diminishing regularly to 12th; 15th and 14th directed backwards, hori- 
zontal, their points only free; 15th spine at base of Ist soft ray. 
Third ray of soft dorsal longest, thence diminishing regularly ; rays 
split up at tips. 
Anal commencing about opposite base of 7th ray of 2d dorsal, and 
preceded by two weak spines hidden in membrane. First soft ray 
longest; rays split at tips. 
Caudal with many accessory rays and about sixteen principal rays, so 
that its lateral margins are convex ; posterior border somewhat emargi- 
hate; rays much divided at tips. 
