No. 2392. jfEW DEEP-SEA FISHES FROM HAW All— JORDAN. 647 



RHYACANTHIAS CARLSMITHI, new species. 



Type. — Cat. No. 84099, U.S.N.M., 7 inches long, besides the caudal 

 fin, which is 1£ inches. Head, 3f in length to base of caudal; depth, 

 3£; dorsal rays, IX.7; anal, III.7; pectoral, 15; scales, 5-53-13. 



Body compressed, lanceolate, little elevated. Head moderate, the 

 occipital region little elevated. Interorbital space broad, with two 

 low ridges. Eye very large, 3| in head, the snout three-fifth its 

 length; mouth moderate, the broad maxillary reaching middle of 

 eye, 2\ in head, its tip four times width of the very narrow pre- 

 orbital lower jaw, slightly projecting, with an emarginate, toothed 

 symphyseal knob. 



* 



^2*; 



FlQ. 3.— RHYACANTHIAS CARLSMITHI, NEW SPECIES. 



Teeth small, even, no true canines, but those on the symphyseal 

 knob and a corresponding patch on a knob in front of each premax- 

 illary somewhat enlarged; a notch between these knobs; base of 

 lower jaw with a prominent angular basal elevation, which also 

 bears larger teeth; teeth on tip of lower jaw extended; vomer and 

 palatines with narrow bands of small teeth, a small patch on tongue 

 and apparently (not certainly) on pterygoids also. Propercle with a 

 right angle, somewhat produced, the vertical and horizontal limbs 

 entire, or nearly so. Cheek region quadrate. Interopercle prom- 

 inent. Opercle moderate, with two small fiat spines, besides a soft 

 point. Gill rakers rather slender and numerous. 



Head everywhere closely beset with moderate, ciliated scales, these 

 covering forehead, preorbital, suborbital, maxillary, mandible, pre- 

 opercle, including both limbs, cheeks, opercle, and interopercle. 

 Scales on mandible smaller and smoother. Scales of body rather 

 small, ciliated, the soft dorsal and anal nearly naked, scaled only 

 along a basal sheath. Lateral line running high, descending in a 

 broad, even curve under soft dorsal, not at all angulated; tubes 

 simple, covering most of the length of each scale; caudal and pec- 

 torals with small scales basally. Dorsal and anal (dried down and 

 not easily studied, the soft rays not certainly counted) dorsal spines 

 slender, the third not elevated, about half head; last ray pointed, a 

 little elevated, about three-fourths head; base of soft dorsal about 



