NO. 1924. XEW PHILIPPINE ANACANTIIIXE FISHES— RADCLIFFE. 135 



1.17 in horizontal diameter; interorbital 4.77 in head, broad, flat, a 

 slight depression. mesially ; snout 2.07, long, verj narrow, needle-like 

 anteriorly, laterally concave in anterior portion, very slightly convex 

 posteriorly; dorsally the snout is rather strongly concave, with a low 

 median ridge on either side of which is a groove, these converging 

 anteriorly and terminating at base of spine-like tip; mouth small, 

 tip reacliing vertical from anterior nostril, its distance from tip of 

 snout 1.20 in length of snout; mandibular barbel slender, hair-like, 

 its length about equal to diameter of pupil; teeth slender, cardiform; 

 angle of preopercle a little produced, its posterior margin slightly 

 concave, directed upward and forward; scales regular, imbricate, 8 

 in each series from origin of dorsal and from last dorsal ray to and 

 including lateral line ; each scale armed with 5 to 7 slightly radiating 

 rows of small, suberect spinules; underside of head naked; traces of 

 a narrow scaleless pit on median line in front of base of ventrals 

 (in some cases this appears to be partially or entirely covered with 

 cycloid scales) ; a narrow scaleless margm around vent, region in 

 front of vent scaled. 



Fig. 10.— Cceloeh^-nchus acutirostris. 



First dorsal spine minute, the second smooth ; interdorsal space 

 1.7 in eye, slightly less than base of dorsal; anterior rays of second 

 dorsal slightly longer than succeeding rays ; anal similar to second 

 dorsal, its rays somewhat longer; ventrals small, outer ray filament- 

 ous, its tip reaching origin of anal; pectoral moderate, sKghtly longer 

 than postorbital part of head. 



Color in alcohol: Ground color dusky olive brown, sides of trunk 

 below pectoral with silvery reflections, becoming blackish on beUy; 

 traces of a dark band crossing back behind occiput, extending down- 

 ward to lateral line, thence backward, then upward across back at 

 origin of second dorsal; another similar band from behind pectoral 

 along side fading out above anterior anal ray; shght dusky shades 

 along median line of back in front of dorsal ; first dorsal dusky white, 

 darkest distally, second dorsal whitish; anterior anal rays punctulate 

 with small dark spots, these becoming fewer and more widely sepa- 

 rated posteriorly; outer ventral ray whitish, punctulate with darker. 



