38 PROCEEDINGS OF THE NATIONAL MUSEUM vol.85 



of caudal peduncle to lower rudimentary caudal rays. Similar silvery 

 areas along each outer face of mandible, on chin and walls of istlimus. 

 Scales with 10 to 18 basal parallel striae; 8 or 9 small, short, apical 

 denticles, with 4 or 5 transverse series. 



D. V, 13, I, fifth spine 2% to 314 in total head length, second 

 branched ray 21/5 to 21/2; A. Ill, 8, i or III, 9, i, third spine 31/8 

 to 3%, first branched ray 2^? to 3; caudal 1 to 1^^^, deeply forked, 

 lobes slender, pointed ; least depth of caudal peduncle 4^/2 to 44^ ; 

 j)ectoral lyV to li^ ; ventral 1% to 2, 



Dark gray-brown, with shining metallic dusky sheen. Iris grayish 

 to dusky or silvery. Inside gill opening dusky to blackish. Fins pale 

 to whitish, caudal lobes medially and upper pectoral rays dusky. 



Type.—U.S.^M. no. 93344. D. 5189. Pescador Island, N. T2° E., 

 3.3 miles (lat. 9°56'30" N., long. 123°15' E.), Tanon Strait, east coast 

 of Negros, Philippine Islands. In 300 fathoms. April 1, 1908. 

 Length 123 mm. Also a series of Pliilippine paratypes. 



Bemo/rks. — Differs from related species in the delicate narrow 

 osseous compartments enclosing the cavernous areas of the head, dark 

 coloration, few abdominal serratures and peculiar metallic finely 

 striated grayish areas, likely luminous areas. 



{metalliciLS, like metal.) 



Genus GEPHYROBERYX Boulenger 



GEPHYROBERYX PHILIPPINUS, new species 

 FiGUBE 11 



Depth 2 to 21/8 ; head 21/3 to 2%, width 214 to 23/5. Snout 4 to 41/2 

 in head from snout tip ; eye 3'l^ to 4, equal to or greater than snout, 

 subequal with interorbital ; maxillary very oblique, reaches opposite 

 hind eye edge or slightly beyond, expansion 1% to 3 in eye, length ll^ 

 to 1% in head from snout tip; interorbital 3% to 3%? broadly con- 

 vex, rather low; nasalia short, directed forward. Gill rakers 6+15, 

 lanceolate, twice gill filaments or 1% in eye. 



Scales 70 close along and above lateral line to caudal base and 4 

 or 5 more on latter ; pores 27 in lateral line to caudal base and 3 more 

 on latter ; 18 above, 19 below, predorsal 20 ; 6 rows behind hind expan- 

 sion of maxillary. Abdominal serrae 8 to 10. Scales with 13 or 14 

 basal parallel striae ; 22 or 23 slender pointed apical denticles, 3 or 4 

 rows irregularly transverse. 



D. VIII, 13, 1 or 14, 1, fourth spine 2^8 to 3 in total head length, sec- 

 ond branched ray 2 to 2ys ; A. Ill, 10, i or 11, i, third spine 3^8 to 4, 

 second branched ray 2i/4 to 21/3 ; caudal li/4 to li/^, forked; least depth 

 of caudal peduncle 5 to 51/5 ; pectoral 1% to 1% ; ventral 1% to 2. 



