PHILIPPINE MACROUROID FISHES GILBERT AND HUBBS. 385 



tained 1.5 times in the least interorbital width, which is contained 

 three times in the head. 



The lower margin of the interopercle is but slightly concave. 

 The Hap at its postero ventral angle is short and blunt, only its tip 

 being visible behind the semicircular margin of the preopercle. 



The inner shagreen-like portion of the premaxillary band of teeth 

 extends only along the posterior half of the band. The teeth in 

 the narrow mandibular band are of unequal size. 



Seven branchiostegal rays. The small pseudobranchial filaments 

 are concealed beneath the skin. 



A single main series of oval, imbricate scales extends along each 

 mandibular ramus, but this series is flanked along its outer side by 

 a few small scales. The lateral line on the tail runs below the middle 

 of the depth, as, in other species. 



The pyloric caeca, 30 in number, are about two-thirds as long as 

 the orbit. 



Lining of the buccal, branchial, and abdominal cavities wholly 

 black. 



B. filamentosm is perhaps most closely related to B. cmtrodes of 

 Japan, differing from that species, however, in the narrower, firmer 

 head, larger eye, longer fin filaments, more numerous pyloric caeca, 

 etc. It is probably related also to B. micronema, an Hawaiian species, 

 but differs, in addition to the characteristics mentioned by Radcliffe, 

 in the fewer gill-rakers. 



Table of measurements in hundredths of length to anus. 



Type. 



Paratypes. 



A Ibatross station 



Total length in mm 



Length to anus in mm 



Length of head 



Length of orbit 



Width of interorbital 



Width of suborbital 



Orbit to preopercle 



Length of snout 



Length of upper jaw 



Depth of body 



A nus to anal 



A nus to ventral 



Ventral to end of pectoral girdle. 



Length of first dorsal base 



Length of first pectoral ray 



Length of second pectoral ray. - . 



Length of third pectoral ray 



Length of outer ventral ray 



Length of second ventral ray 



Scales above lateral line 



Soft rays, first dorsal 



Ventral rays 



Pectoral rays 



Gill-rakers, left side 



Gill-rakers, right side 



5587 

 1242 

 72 

 63 

 15 

 22 

 10 

 31 

 20 

 39 

 43 



7.5 

 36.5 

 30 

 16 

 11 

 121 

 43 



119+ 

 31 



7 



8 



8 



15 



6+20 



5587 

 i 173 

 48 

 70 

 15 

 24 

 10 

 33 

 22 

 40 



10 



15 

 6+19 

 6+20 



i A pseudocaudal developed. 



(ftlamentosus, in reference to the long filaments.) 



.5650 

 230 



5619 



U81 



54 



6+20 



