NATURAL SCIENCES OF PHILADELPHIA. 265 



CHALCINUS CULTER, Cope, sp. nov. 



An elongate species, with very posterior dorsal fin. Height at 

 pectoral fin 4.33 times, at ventral five times, in length without 

 caudal fill. Head 3.75 times in the same; orbit 3.8 in head and 

 1.2 in interorbital space. Head above fiat in one plane from end 

 of muzzle to dorsal fin. Teeth small tricuspid, those of exterior 

 row not in contact with each other. Dorsal fin short, its last ray 

 opposite first anal; distance from base of caudal a little more 

 than half distance from end of muzzle. Pectorals falcate, reach- 

 ing nearly to line of dofsal. Radii D. 11 ; C. 19; A. 33 ; Y. 8 ; P. 

 11. The inferior caudal rays are shorter than the median and 

 superior; ventrals reach to line of dorsal. The operculum is 

 nearly as long as high. Scales 7-40-3. 



Color pale golden ; head silver, the upper part of the operculum 

 with steel-blue reflections, bounded by a groove. A round black 

 spot on base of median caudal rays. 



Total length .158 m.; length to dorsal fin .087, to anal .098. 



This species is nearest the G. nematurus, Kner, but differs from 

 it in man}'- important respects. 



GASTEKOPELECUS STELLATUS, Kner. 



Denkschr. Ac. Wiss. Wieu., 1860, 17 Tab. 1. f. 2; Giinther, Catal. B. M. 

 V. 343. 



R(EBOIDES MYERSII, Gill. 

 Proc. Ac. Nat. Sci. Pliila., 1870, p. 93. 



D. 11, A. 52; scales 22-83-22. Head 3.4 times in length. Prof. 

 Gill does not give the number of scales in his description, and 

 our fishes diff"er from his in the less depth, which enters the length 

 2.7 times instead of 2.5, and the larger eye, which enters the head 

 three times instead of 3.5 times. 



ECEBOIDES RUBRIVERTEX, Cope, sp. nov. 



Radii D. ii., its anterior rays 1.2 times as long as the head; 

 A. 51. Depth 2.66 times in length, length of head four times in 

 same. Scales 27-88-19. Ventral fin reaching anal, pectoral not 

 reaching end of ventral. Length from dorsal to near end of adi- 

 pose equal from same to end of muzzle (much less in 7?. myersii). 

 Profile gently concave above, dorsal line very convex ; top and 

 sides of head rugose. Exterior teeth 3 above, 4 below ; mandi- 

 1872.] 



