90 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
Approaches Lycenchelys poecilimon Jordan and Fowler appearing 
to differ in proportions, much smaller and shorter mouth, larger eye, 
apparently fewer dorsal and anal rays and the coloration. 
Type.—U.S.N.M. No. 99511. D. 4817. Niigata Light, S. 29° E., 
18 miles (lat. 38°12’ N., long. 188°52’ E.). In 61 fathoms. July 18, 
1906. Length 70 mm. 
(orihwros, spotted.) 
Family MONACANTHIDAE 
Genus STEPHANOLEPIS Gill 
STEPHANOLEPIS RETROSPINIS, new species 
FIGURE 25 
Depth 134; head 3, width 224. Snout 114 in head, tip in front 
well below level of eye or opposite upper part of gill opening; eye 
244 in head, 2 in snout, slightly greater than interorbital; mouth 
small, terminal; teeth little exposed, front pair in each jaw largest; 
interorbital 314 in head, convex. Gill opening 134 in eye. 
Figure 25.—Stephanolepis retrospinits, new species: Type (U.S.N.M. No. 108467). 
Skin rough velvety. No armature on caudal peduncle or on side of 
tail. Pelvic flap little developed, with feeble slender spines. Pelvic 
spine hinged, hind section freely movable, edges spinescent all 
around. 
4 Proc. U. S. Nat. Mus., vol. 25, p. 748, fig. 2, 1903 (type locality: Off Kuikwazan in 
Matsushima Bay, Japan). 
