NO. 1924. XEW PHILIPPIXE AyACAyTHiyE FISHES— RADCLIFFE. Ill 



mandibular barbel present, small, as long as diameter of pupil; nar- 

 row villiform bands of teeth in jaws; gill membranes forming a free 

 fold across the istlimus; no traces of pseudobranchiae discernible; 

 scales small, deciduous, 6 rows from last dorsal ray to and including 

 lateral line; lateral line arched anteriorly; striated area above ventral 

 base extending upward nearly to base of pectorals. 



Tip of snout to origin of dorsal 5.32 in total length; first dorsal 

 spine minute, second dorsal spine 1.15 in head, longer than adjacent 

 soft rays; interdorsal space 6.72 in total length; second dorsal low; 

 tip of snout to origin of anal 3.47; anal rays longer than soft dorsal 

 rays; tip of snout to origin of ventral 5.50; outer ventral ray \\-ith a 

 filamentous tip, 1.25 in head; pectoral 1.37. 



Color in alcohol: Ground color, bro\\Tiish buff, sides minutely 

 dotted %\"ith darker brown; traces of a silvery band along middle of 

 side; belly and under side of head blackish with metallic glints; 

 snout, angle of mouth, and narrow line along mandible whitish; 

 cheek and preopercle silvery; suborbital silvery, with, darker shades 

 underneath; opercle blackish, ^^■ith silvery glints; insertion of dorsal 

 and second spine blackish, distal half of soft rays dusky, basal half 

 wliitish; each ray of second dorsal and anal vdth. a black spot at 

 base; first anal ray blackish; ventrals and pectorals dusky black, their 

 bases black. 



Type- -C&t. No. 72927, U.S.N.M., 16 cm. in length, taken ^\-ith a 

 beam trawl at station 5548 (lat. 6° 00' 20'' N.; long. 120° 45' 35" E.), 

 near Jolo, at a depth of 232 fathoms, on a bottom of sand and broken 

 shells. 



This species is very close to Phihppine examples of H. striatissimus, 

 differing in having 7 (rarely 6) instead of 8 (rarely 9) ventral rays 

 and in its darker coloration. These characters appear to be constant 

 for the entire series of specimens in the collection. 



HYMENOCEPHALUS LONGICEPS Smith and Radclifie, new species. 

 Plate 23, fig. 3. 



Dorsal ii,10-138; anal 135; ventrals 8; pectorals 15. 



Head 5.27 in total length, low, pointed, elongate, resembling H. 

 longiharhis; crests firmer than in H. torvus, and membranes lining 

 the canals less easily ruptured; middle length of head shghtly in 

 front of posterior margin of orbit, breadth of head 1.86 in its length; 

 depth of body 7.71 in total length, back moderately arched, greatest 

 depth being at origin of first dorsal; tail slender, elongate; eye 3.28, 

 subcircular, orbital rims not as prominent as in H. tornms; interorbital 

 5.86, very narrow; snout 4.10, longer than in any of the other Phihp- 

 pine species, pointed, scarcely protruding beyond tip of premaxillary; 

 nostrils as in related species; suborbital very narrow, its width equal 

 to about 0.5 diameter of pupil; mouth large, obhque, lower jaw 



