PHILIPPINE MACROUROID FISHES— GILBERT AND HUBBS. 



553 



In its distribution this species closely parallels V. nig rod or satis; 

 the two species were often dredged together. 



Among the diagnostic characters of this species the coloration, the 

 parallel arrangement of the spinules on the scales, and the presence 

 of two lens-like organs may be mentioned. The lens-like structures 

 closely resemble those of Hymenocephalus : the smaller one lies be- 

 tween the ventral fins, the larger one is situated in a naked area 

 immediately before the anus. 



(nigromarg hiatus, having a black margin along the anal fin an- 

 teriorly.) 



Lucigadus, new subgenus. 



61. VENTRIFOSSA LUCIFER (Smith and Radcliffe). 



Macrourus lucifer Smith and Radcliffe, Proc. U. S. Nat. Mus., vol. 43, 

 1912, p. 113, pi. 24, fig. 1. 



List of stations. 



1 One of these specimens (Cat. No. 72929, U. S. N. M.) is the type of the species. 



This species is one of the most distinct in the entire subfamily. 

 The conical pearly structure directed downward and forward, and 

 ensheathed in the ventral abdominal wall, is highly diagnostic. 



The possibility that this organ is phosphorescent led to the naming 

 of this species lucifer. 



Genus LIONURUS Gunther. 



Lionurus Gunther, Challenger Reports, vol. 22, Deep-Sea Fishes, 1SS7, pp. 

 124, 141.— Gilbert and Hubbs, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 192. 



The genus Lionurus is here used as we have already modified and 

 defined it, 1 exclusive of those species which are now referred to 

 Ventrifossd) a genus which we- have just described. As all of the 

 Philippine species have spinous scales, they are all referred to the 

 subgenus Nezumia, 



iProc. U. S. Nat. Mus., vol. 51, 1916, pp. 141, 192. 



