PHILIPPINE MACEOUROID FISHES GILBERT AND HUBBS. 381 



Subgenus Bathygadus Gunther. 



1. BATHYGADUS SPONGICEPS, new species. 



Type-spcci?nen.— Cat. No. 78210, U.S.N.M.: 390 mm. in total 

 length, 105 mm. long to anus; dredged at Albatross station 5582 in 

 the vicinity of Darvel Bay, Borneo. 



List of stations. 



Albatross 

 station. 



5274 

 15460 



5467 

 5582 

 5648 



Locality. 



China Sea, off southern Luzon . 

 Off southeast coast of Luzon . . 



do 



Off northeastern Borneo. . .... 



Buton Strait, near Celebes 



Depth 



in 



fathoms. 



Bottom 

 tempera- 

 ture. 



525 

 565 

 480 

 890 

 559 



'F. 

 41.3 



38.3 

 39.2 



Number 

 of speci- 

 mens. 



1 B. jurvescens was also dredged at this station. 



The body is deep and sharply compressed, thin posteriorly; the 

 width of the body across the pectoral bases is two-fifths its greatest 

 depth. The head is broad and cavernous; its membrane-bones are 

 thin and papery. The dorsal contour is arched behind the occi- 

 put, but concave from the occiput forward to the tip o*f the pre- 

 maxillary spine, which enters conspicuously into the profile ; the ven- 

 tral contour is angulated more sharply than usual at the posterior 

 end of the mandible. The sides of the head are subvertical. The 

 orbit is rather small, its length being contained five times in the 

 head, or 1.8 (1.7 to 1.8 in paratypes) times in the least interorbital 

 width, which is as great as, or slightly greater than, the length of 

 the snout, and is contained slightly more than three times in the 

 head. The least width of the suborbital space is contained 1.3 (1.3 

 to 1.5) times in the length of the orbit. The opercle, as usual, di- 

 vides posteriorly into two branches, the upper of which ends in a 

 flat and weak spine ; the lower branch, also weak, extends across the 

 subopercle to an acute tip. The lower margin of the interopercle is 

 arched upward more strongly than in the related Japanese species, 

 B. antrodes. The posterior angle of the interopercle is produced 

 backward in the form of an acutely rounded lobe, which is longer 

 and narrower than that of B. amtrodes; the tip of this flap is visible 

 behind the rounded angle of the preopercle. 



The mouth is oblique and large; the upper jaw extends to the ver- 

 tical from the hind margin of the orbit, and is contained 1.8 (to 

 1.9) times in the head. The teeth are rather coarse and irregularly 

 placed in the premaxillary band, which is margined within by a defi- 

 nite, narrow, parrallel-sided area of shagreen-like teeth, extending 



