516 PROCEEDINGS OF THE NATIONAL MUSEUM vol.86 



Photonectops is probably most closely related to Photonectes from 

 which it is differentiated by the more numerous photophores in the 

 lateral series, the more numerous teeth, which are arranged in several 

 rows, by the absence of pectoral fins (present in some species of 

 Photonectes), and by more than one suborbital organ on each side of 

 head. From Melanostomias and Echiostoma it is differentiated by 

 the more numerous teeth, the more numerous photophores, the 

 elongate slender shape, and the cleft of the mouth being long and 

 strongly curved upward anteriorly. From Echiostoma it differs 

 further in having no pectoral fins. From Lamprotoxus, Grammato- 

 stomias, and Opostomias it differs by the more posterior insertion of 

 the ventrals. From Eustomias and Flagellostomias it is distinguished 

 by the anal and dorsal fins beginning at the same vertical. From 

 Photostomias and Malacosteus it is separated by the presence of a 

 barbel and the presence of a normal floor between the lower jaws. 

 From Pachystomias it is told by the presence of teeth on the maxillaries 

 and the normal floor between the lower jaws. From Aristostomias 

 it is differentiated b}^ the normal floor between the lower jaws, the 

 strongly curved jaws, and lack of pectorals. 



Other characters of the genus are those of the species. 



PHOTONECTOPS MULTIPUNCTATA, new species 

 FlOTTRE 62 



Types. — Holotype, a specimen 280 mm in standard length from 

 station 1256C taken January 3, 1935, latitude 51°15' N., longitude 

 131°37' W., U.S.N.M. no. 108144, and one paratype from station 

 665C, April 14, 1932, latitude 51°16' N., longitude 130°35' W., 

 U.S.N.M. no. 108160. 



Description. — The species is described from two specimens. The 

 holotype is in good condition except for the loss of some skin on the 

 dorsal surface, the sides, and the caudal region and fraying of the fins. 

 The barbel is reduced to a short black stub. It is not possible to 

 determine whether this is the natural state or whether the organ has 

 been broken off. Except for the broken tips of the fin rays the smaller 

 paratype (from station 665C) also is in excellent condition. 



The proportions and counts for the holotype are: Dorsal rays 16; 

 anal rays 19; pelvic fins 10 rays on the left side and 9 on the right. 

 Length without caudal 280 mm. Proportions of the length without 

 caudal: Snout to insertion of the ventrals 1.5; snout to insertion of 

 anal 1.1; greatest depth (before ventrals) 14.8; depth behind head 

 21.5; diameter of eye 56.0; length of lower jaw 11.7; length of snout 

 46.6; length of longest ventral ray 7.6. The large, nearly circular, 

 luminous spot behind and below the eye is covered by dark pigment; 

 the smaller one on the antero ventral border of the eye, noted in the 



