NO. 1924. NEW PHILIPPINE ANACANTHINE FISHES— RADCLIFFE. 129 



gill-slit, suborbital ridge salient, ending abruptly in front of angle of 

 preopercle; body rounded, greatest depth 7.28 in total length; vent 

 less than a pupil's diameter in front of origin of anal; tail com- 

 pressed, tapering; eye subelliptical, horizontal diameter 3.96 in head, 

 about 0.4 length of snout, vertical diameter about 0.75 horizontal 

 diameter; interorbital 4.32, broad, nearly flat, a shght depression 

 behind median ridge of snout; snout 2.35, rather long and narrow, 

 depressed, everywhere transversely convex, longitudinally a little 

 concave, ending anteriorly in a short, slender spine; lateral outlines 

 of snout moderately convex, the narrowing being more rapid in the 

 terminal third, and forming with the projecting spinous tip a shght 

 concavity in this portion of snout ; width of snout at anterior margin 

 of eye 1.4 in its length; its width midway between tip and eye less 

 than 0.5 its length, about 0.66 its width opposite anterior margin of 

 orbit; postorbital portion of head 1.33 in snout; nostrils well developed, 

 anterior circular, posterior vertically elongate and weakly crescentic, 

 the area immediately surrounding nostrils devoid of scales; mouth 



Fig. 2. — Cceloehynchus commutabius. 



^ large, the distance of its anterior margin from tip of snout 2.64 in 

 head, exceeding postorbital portion of head by about 0.5 diameter of 

 pupil; maxillary 3.80 in head; mandible extending behind vertical 

 from posterior margin of eye; mandibular barbel slender, 0.37 hori- 

 zontal diameter of eye; teeth incurved, cardiform; scales large, 



• imbricate, 6 in each series from origin of dorsal and from last dorsal 

 ray to and including lateral line; scales on body armed with from 5 

 to 7 well developed, radiating, subequal ridges; ridges on scales of 

 head higher; those on median longitudinal line of snout, on sides of 

 occiput between the occipital ridges, and on portion of head behind 

 cheek very distinct and rather more divergent; under side of head 

 scaled. 



First dorsal well developed, first spine small, length of second 

 slightly greater than distance from tip of snout to anterior margin 

 of pupil; interdorsal space 4.13 in head; second dorsal relatively 

 low; anal rays better developed than the corresponding rays of 

 second dorsal; origin of anal slightly in advance of vertical from 

 origin of second dorsal ; ventrals small, outer ventral ray filamentous 



48702°— Proc.N.M.vol.43— 12 9 



