tJ50 ZOOLOGY FISHES. 



raptorial type, and without grinding surface ; but it is rare to find all the 

 teeth of the longer row in functional use at one time. In fact, in several 

 specimens examined, I found the upper tooth wanting ; in one, the lower 

 tooth was not anchylosed. 



Dorsal outline but little arched ; caudal peduncle a little contracted, 

 Head short and wide ; the muzzle abruptly descending to the terminal mouth. 

 Mouth descending a little posteriorly ; the end of the maxillary extending a 

 little beyond the anterior margin of the orbit. Eye rather small for the 

 genus, 4.2 times in length of head, 1.2 in length of muzzle, and twice in 

 iuterorbital width. Head 4.2 times in the length to the basis of the caudal 

 fin, or 5.4 times including the large caudal fin. Depth of body equal the 

 length of the head ; width of latter behind equal 0.6 of its length. Scales, 



8 



35 ; 22 cross-rows in front of dorsal fin. Radii : D. I. 8 ; A. I. 9, sometimes 



4 



I. 10 ; V. 8, not reaching vent ; pectorals extending 0.6 the distance to the 

 ventrals. Total length, O ra .084; length to basis of caudal fin, O m .OG7 ; to 

 basis of first ray of dorsal, O m .038. In life, entirely silvery, with a broad 

 band on the side, of a more brilliant hue of the same. 



ALBUKNELLUS JEMEZANUS, Cope, sp. nov. 

 PLATE XXXI, FIGS. 3, 3a. 



A species of the usual typical form of the genus, viz, with slender 



5 



body, and mouth descending obliquely backward. Scales large, S5 ; 19 



rows between dorsal fin and occiput. First dorsal ray opposite base of 

 last ventral ray ; ventral fin appressed, reaching a little beyond last dorsal, 

 but not to vent ; pectoral extending three-fourths the distance to the ven- 

 tral. Radii : D. I. 8 ; A. 1. 10 ; V. 8 ; caudal long and deeply forked. Muz- 

 zle acuminate ; in profile gently descending from the nares to the lip. Max- 

 illa extending beyond line of orbit. Symphy sis mandibuli acuminate. Orbit 

 3.6 times in length of head, once in muzzle, and 1.25 times in interorbital 



