PROCEEDINGS OF THE NATIONAL MUSEUM. 421 



posterior suture of preorbital and the anterior suture of preopercle. 

 The upper spineof preopercle minute. Head relatively longer ; depth 5i. 



Twelve specimens, 4 to 7i inches, from stations 3470, 3472, and 3470^ 

 343, 295, and 298 fathoms, respectively. 



Type.—^o. 47730, U.S.I^'.M. 



Family MACEOUE1D.E. 



CCELORHYNCHUS PARALLELUS, Giinther. 



One specimen, 4f inches long, from station 3473 ; 313 fathoms. Taken 

 by the Challenger ofl" ]Srew Zealand, Kermadec Islands, and Japan. 



CCELORHYNCHUS GLADIUS, new species. 

 (Plate XLI, fig. 3.) 



Head 3^; depth 9.;^; B. G. First dorsal 1, 10 to 1, 11; second dorsal 

 quite well developed anteriorly, its longest rays nearly equal to inter- 

 orbital space; aiuil rays delicate, slender; pectorals 18; ventrals 7. 



Top of head evenly rounded, both transversely and longitudinally. 

 Snout depressed, turned upward (its dorsal profile concave), very long, 

 narrowed anteriorly, its tip produced as a long, strong, horny spine; 

 length of snout, including spine, more than half head, the spine about 

 one-third of the entire snout. The strong infraorbital ridge begins at 

 the base of the rostral si)ine and extends in a nearly straight line down- 

 ward, outward, and backward far beyond orbit, to the angle of the pre- 

 opercle. Interorbital space very nearly equal to long diameter of orbit. 

 A pair of minute parallel s])iny ridges on occiput, another extending 

 backward as a continuation of tlie upper orbital rim to above upper 

 angle of gill opening. Orbit large, oblong, its vertical diameter much 

 less than the longitudinal, the latter 1^ in the postorbital part of head, 

 about 43 ill the whole head. Mouth small, entirely inferior, the maxil- 

 lary reaching to about the middle of the orbit or a little beyond. 

 Distance from tip of snout to front of premaxillaries very slightly less 

 than length of snout and a trille less than one-half length of head. 

 Width of month equal to longitudinal diameter of orbit. Teeth in 

 narrow bands on both jaws, none of them enlarged. Angle of preoper- 

 cle a little produced, the posterior edge of preopercle nearly straight, 

 directed np ward and forward. Barbel minute, slender, abont 3^ or 4 in 

 the orbit. Gill membranes united, joined to the isthmus without free 

 fold behind. Anterior gill slit only a small pore-like opening. Body 

 compressed throughout, its greatest width 1;^ in its depth; trunk and 

 tail tapering uniformly. Scales of moderate size, or 7 scales in a trans- 

 verse series between the lateral line and origin of first dorsal; scales 

 from the back near first dorsal fin with about 20 to 25 small spine- 

 lets in usually 7 nearly parallel series, one from back in front of first 

 dorsal with 11 spinelets in 5 series; another from ventral surface near 

 origin of anal fin with 19 spinelets in series; another from breast 



