I 



NO. 27 A XEW SPECIES OF DEEP-SEA FISH SCIIULTZ 5 



anal fin and dorsal to pel vies) 4 ; suprapectoral ( behind and above base 

 of pectoral) 2; subcaudal (underside of caudal peduncle) 4; supra- 

 abdominal (above abdominal series and behind the suprapectorals) 6; 

 jireorbital i ; subopercular i ; postorbital (behind and little below 

 eye) I ; and preopercular (below eye and near lower posterior angle of 

 preoperculum) i. Length of head 34 (33, 32.5, 31, -) ; greatest width 

 of head 18 (16.5, 16.5, 18, -) ; length of snout 9.5 (9, 9.5, 9, -) ; width 

 of bony interorbital 3.3 (2.5, 3.2, 3.4, -) ; horizontal diameter of eye 

 13-5 (i3' 14' 12.5, -) ; length from tip of snout to rear margin of 

 maxillary 33.5 (33, 31, 29.8, -) ; snout to origin of soft dorsal 59 

 (56, 56.5. 55. -) ; height of dorsal blade 18.5 (14.5, 16.5, 15, -) ; 

 length of base of dorsal blade 20 (21.5, 20, 19, -) ; greatest depth of 

 body (bony ridges or dorsal blade not included) 82 (80, 77.5, 75, -) ; 

 least depth of caudal peduncle 13.5 (14.5, 12.5, 13.5, -) ; length of 

 caudal peduncle 16.5 (14.5, 17.5, 16.8, -) ; length of longest gill raker 

 on first gill arch 11 {y.2, 7.5, 7.8, -) ; length of abdomen (plates) 41 

 (41, 39.5, 40, -) ; distance from origin of soft dorsal to base of caudal 

 fin rays 59 (57.5, 60, 56, -) ; length of base of soft dorsal 18.5 (19, 

 17.3, 16.8, -) ; length of base of adipose fin 18.5 (16.5, 19.0, 19.0, -) ; 

 length of nuchal process 8 (9, 13, 7.8, -). 



This species may be distinguished from all other members of the 

 genus Argyropelecus by the data presented in tables i and 2 and 

 because it is the only species in which the single spine at the posterior 

 angle of the abdomen curves somewhat forward. 



Argyropelecus elongatus Esmark, 1871 (Forh. A^idensk. Selsk. 

 C"hristiania, aar 1870, p. 489), is too briefly described to be recognized. 

 The very inadequate description and poor figure of Argyropelecus 

 hocagci Osorio, 1909 (Mem. Mus. Bocage i, pp. 27-28. pi. 2, fig. 3). 

 is also unrecognizable. 



