72 PJlOCEEDiXGS OF THE XATIONAL MUSEUM. vol.xxiv. 
12. CRYPTOCENTRUS Ehrenberg. 
Cri//>l(iir-idrnx (Ehrenberg ]M^;. ) Bleekek, Arch. Ni'-erl., IX, 1874, p. 322 {cri/pto- 
(riitnt.s). 
ParcKjohhis Bleeker, fide Bleeker, Arch. Nrerl., IX, 1S74, ji. 822. 
Body luoderately elongate, covered with minute cycloid sciiles. 
Head coinpres.sed. narrow above and convex in profile, the eyes close 
tog-other. Mouth large, oblique, the thick chin prominent; tongue 
nai'row, not notched; teeth rather strong; no Ijarbels; lower jaw not 
moving readily, so that the mouth is not easily opened wide; head 
naked. Dorsals short, the tirst of six spines, which are sometimes 
])roduced in lilanients in the male; caudal pointed; ventrals rather 
long; pectorals without silky rays; no filaments on the shoulder gir- 
dle; isthnuis very narrow; the gill membranes somewhat continued 
forward Ijelow. 
Species brightly colored; rather numerous in the seas of the East 
Indies. The Japanese species differs from the type in the elevation 
of the dorsal spines. 
(KpT'TTToi;, hidden; KtvTpnv, spine, from a concealed projection on 
the preopercle in C cry2)foccntnit<.) 
23. CRYPTOCENTRUS FILIFER ( Cuvier and Valenciennes ). 
Gohliix tiVtfer Ccvier and Valexciexxes, Hist. Xat. Poiss., XII, 18o7, p. 106. 
( " Mer des Indes. ' ' ) 
Gubia.^ liii.UfeJi Bleeker, Act. Soc. Sci. Indo-Nederl., Ill, Japan, p. 16, i>l. i, 
fig. 2, Nagasaki. — Gunther, Cat. Fish., Ill, p. 73, H(jngkong. 
Head 3f in length; depth 5^; depth of caudal peduncle 2f in head; 
eye 5; snout U : maxillary If; D. VI-11 ; A. lU ; P. IS; scales in 
lat(>ral series about 95. in transverse series about 35. 
Body deepest at insertion of spinous dorsal, from where it grows 
gradually smaller to the caudal peduncle. Head large; snout about 
equal to diameter of eye; blunt, rounded. Eyes small; not directed 
upward; interorbital space narrow; convex. Mouth large, oblique; 
jaws equal; lips thick; no barbels; maxillary entirely concealed; 
extending posteriorly far lieyond eye to a point midway between tip 
of snout and posterior border of opercle. Teeth of jaws in broad 
bands; the outer row much enlarged and canine-like; curved back- 
ward; a large canine on each side of lower jaw; pharyngeal teeth 
bristle-like. Gill opening extending far forward below; the isthmus 
narrow, extending upward slightly above base of pectoral. Gill- 
rakers short, slender; 11 on lower limb of first arch; represented on 
upper limb of arch by 3 small papillae. Inner edge of shoulder girdle 
without papilhe. Head naked; skin on interorbital area, snout, and 
suborbital loose, wrinkled and folded; body ])ehind nape with minute 
cycloid scales, cleeph' embedded anteriorly, where their position is 
