152 



In tlie following synopsis the genera added to the Indian list by the 

 Investigator are marked with an asterisk, and those that are represented in the 

 deep sea by a dagger. 



II. 



Synopsis of the Indian genera of Scopelidas. 



Pseudobranchias well developed : — 



1. Body scaly, ■without phosphoiescent spots : — 



i. Maxilla not dilated posteriorly : — 



a. Dorsal in front of the ventrals : some of the teeth 

 enlarged and barbed at point : eyes with a strong 

 upward cast 



b. Dorsal fiu above or behind the ventrals : none of 

 the teeth barbed : eyes quite lateral : — 



a. Teeth on each palatine in a single band 

 p. Teeth on each palatine in a double band ... 

 ii. Maxilla rudimentary or absent : some of the teeth barbed 



at point : caudal three-lobed 

 iii. Maxilla dilated behind : — 



a. Eyes lateral, very large : no prolonged rays 



b. Eyes very small : some of the rays of the pectoral 

 (and also sometimes of the caudal and anal fins) 

 enormously prolonged ... ... 



2. Body scaly, with phosphorescent spots : — 



i. Snout high, short, bluntly rounded : mouth-cleft nearly 



reaching the angle of the preoperculum : anal fin close 



behind the dorsal 

 ii. Snout depressed, rather long : mouth-cleft wide, but not 



nearly reaching the angle of the preoperculum : anal a 



considerable distance behind the dorsal 



3. Body naked : some enormous fangs in tlie mandible, vomer and 

 palatines 



Pseudobranchiee rudimentary : otherwise closely related to Neoscopelus 



*ScOPELARCHUS.t 



Saurus. 

 Saurida. 



Harpodon.f 



*CHLOROPHTEALMUS.t 

 *BATHYPTEROIS.t 



Scopelus.f 



*NEOSCOPELns.t 



*OD0NT0ST0MnS.t 

 *ScOPELENGYS.t 



SCOPELARCHUS, Alcock. 

 Scoj^elarchus, Alcock, Joarn. As. Soc. Bengal, Vol. LXT. pt. 2, 1896, p. 306. 



Body elongate, compressed, covered with scales which, except on the lateral 

 line, where they are adherent, are deciduous. 



Cleft of mouth very wide : premaxilla very long, tapering, firmly attached 

 to the long slender maxillae. A single row of small teeth in the premaxilla : a 

 double row of teeth in the mandible, the inner row being large depressible and 

 barbed at tip ; an incompletely double series of similarly enlarged teeth on either 

 palatine, and a long narrow row of almost similar teeth on the tongue and 

 hyoid. Eye large. Gill-openings very wide, gill-membranes not attached to the 

 isthmus, branchiostegals not very numerous (about 6 ? ) ; pseudobranchite 

 large. 



