EXPLANATION OF TP:RMS. 



The names propostMl for the several groups of photophores are explained Iiy the diagrams and the 

 accompanying table of explanations. The names previously proposed by Dr. Raflaele {Miltheiliinyeii aus 

 der zoologischen Station cii Nmpel, IX, 18Xi1, p. 181, PI. vil) aiid by Dr. Liitkeu (Memoirea di- VAcademie lioi/aJe 

 des Sciences et des Lettrex de Danemnrl-, Coin-nliague, 6'' serie, Classe des Sciences ^•Il, 1892, p. 234, ligure) are given 

 in parallel columns. 



Only the lateiat (three groups), annl, and caudal photoplwres a)>pear to have any special value in the 

 separation of closely alliid species. 



NOMENCLATURE OP PHOTOPHORES. 



GOODE. 



AO. Anteorbital. 

 SI). Suborbital. 



M. Mandibular. 



<>. Opercular. 



P. Pectoral. 

 AL. Anterolateral. 

 ML. Mediolateral. 

 Pli. Posterolateral. 



T. Thoracic. 



V. Ventral. 



A. Anal (or superanal). 



C. Caudal. 

 SO. Supercaudal. 



RAFFAELE. 



Preorbitali. 



Preoperculari. 



Branchiali. 



Laterali. 



Do. 



Do. 

 Ventral i. 

 Ventrali. 

 Anali. 

 I'ost-anali. 

 Codali. 



Mandibulares. 



Operculares. 



Pectorales. 



Supraventrales. 



Supra-aual(>8. 



Posterolaterales. 



Thoracici. 



Ventrales. 



Anales anteriores. 



Anales posteriores. 



Caudales. 



