1S85.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 53 



sal rafber abruptly black; anal white. Lengtb of pec- 

 toral fin 1^ in body, its tip reaching nearly to base of 

 caudal ; first ray of pectoral 1| in length of longest ; veu- 

 trals 2f in length of body, their tips reaching tip of last 

 ray of anal ; dorsal rather high, its longest rays 1^ in 

 head ; longest anal ray 3i in head ; lower lobe of caudal 

 about i longer than head. Head 4J in body ; depth '>^. 

 D. 14, A. 9. Scales about 52 : 27 before the ventral fins; 

 26 in front of dorsal. Snout 4 in head ; eyes 3J in head ; 

 iuterorbital space broad, slightly concave, its width 2f 



head ; depth of head If in its length nigricans, 13. 



jjj. Ventral fius inserted at a point midway between middle of oper- 

 cle and last caudal vertebra (or between tip of snout and 

 tip of upper lobe of caudal). 

 m. [Dorsal fin with a large blackish blotch; pectorals nearly 

 uniformly dusky ; ventrals bluish white. Tip of pecto- 

 torals reaching end of dorsal ; tip of ventrals reaching 

 middle of anal ; insertion of ventral midway between 

 tip of snout and that of upper lobe of caudal ; dorsal fin of 

 medium height inserted much iu advance of anal. Snout 

 i length of eye, which is 3J in head. Head 5i iu total 

 length (with caudal) ; depth 6^. D. 13, A. 9 or 10. 



Scales 50.] {Giinther.) bahiensis,14. 



mm. Dorsal fin pale, somewhat dusky above, without distinct 

 black blotch ; ventrals mesially blackish, the margins 

 paler; dorsal rather pale, somewhat dusky above; pec- 

 torals mostly dusky, with the posterior edges paler; an 

 obscure oblique pale baud across lower parr. Pectorals 

 If in length of body, their tips reaching caudal fin. Ven- 

 trals 3f iu body, their tips reaching middle of anal. 

 Lower lobe of caudal about one-third longer than head. 

 Head 4^ to 5 in length of body ; depth, O. D. 12, A. 10. 

 Snout, 4 in head. Eye, 3^ in head. Base of anal. If in 

 base of caudal. Scales, about 60..californicus, 15,16. 

 it. Pectoral fins covered with small round dark spots; the edged paler ; 

 ventral fins pale, the middle rays grayish, obscurely 

 spotted ; other fins pale. Pectoral fius reaching to end 

 of dorsal ; ventral fins inserted midway between pre- 

 opercle aud base of caudal, their tips reaching nearly to 

 base of anal. Dorsal fin rather high, its auterior rays 

 about half length of head. Distance between first dorsal 

 pay and first rudimentary ray of caudal equal to length 

 of head. Scales, 46: 34 before the dorsal fin, and 9 be- 

 tween lateral line and dorsal fin. Head nearly 4 in length 

 (to base of caudal) ; depth, 5. D. 11 or 12, A, 8. Snout 

 obtuse and depressed, three-fifths diameter of eye, 

 which is 3 in head, and less than width of iuterorbital 



space, which is slightly concave callopterus, 16. 



Tih. Second ray of pectoral simple (like the first) ; third ray divided. 



«. Snout more obtusely descending thau in any other species, 

 its length 4^ in head ; eye 3 in head ; iuterorbital area 

 slightly concave, about J wider than eye; ventrals in- 

 serted midway between posterior margiu of orbit and 

 last caudal vertebra ; their leugth 2i% in body, their tips 

 reaching last ray of anal ; pectorals If in body, their tips 



