42 ACANTHOPTERYGII. 
II. Dorsal fin scaleless, except at the base ; second anal spine longer than third. 
A. Maxillary not extending beyond the vertical from anterior margin of eye. 
Second anal spine 2 the length of head; depth of body 3in the length . . . 8. dbranicki. 
Second anal spine 3 to 7 the length of head; depth of body 34 in the length . 4. bowcardi. 
B. Maxillary extending to below anterior part of eye. 
60-70 scales inalongitudinal series. . 2. 2. 2 2. 2. ww. OB batyanus. 
54-62 scalesina longitudinal series. . 2. . 2. . 2... we OB. eroero. 
1. Pomadasis leuciscus. 
Pristipoma leuciscus, Ginth. Proc. Zool. Soc. 1864, p. 1471, and Trans. Zool. Soc. vi. 1868, p. 416, 
t. 66. fig. 3°. 
Pomadasis leuciscus, Jord. & Gilb. Proc. U.S. Nat. Mus. 1881, p. 387°; Jord. & Fesler, Rep. U.S. 
Fish. Comm. 1893, p. 495 *. 
Brachydeuterus leuciscus, Jord. & Everm. Bull. U.S, Nat. Mus. xlvii. 1898, p. 1827°; Gilb. & 
Starks, Mem. Calif. Ac. Sci. iv. 1904, p. 109°. 
Depth of body 3 in the length, length of head 3. Snout a little longer than eye, the diameter of which is 
4—5 in the length of head; interorbital width 44-42% in the length of head. Preorbital deep, its depth 
greater than the diameter of eye. Maxillary not quite reaching the vertical from the anterior margin of 
eye. 11 or 12 gill-rakers on the lower part of anterior arch. 50-56 scales in a longitudinal series, 
5 between lateral line and middle of dorsal fin. Dorsal XII 14-15; third or fourth spine longest, 3 or 
less than 3 the length of head. Anal III 7-8; second spine not longer than third, 1-3 the length of 
head. Pectoral $-3 the length of head. Caudal emarginate. Silvery, back darker; indistinct dark 
longitudinal lines on the side; edge of opercular membrane blackish; often a blackish blotch in the axil 
of pectoral; dorsal and caudal fins dusky. 
Hab. Pacific Coast from California to Peru, entering rivers : 
Lower California®.—Mexico, Mazatlan®; Guatemala, San José and Chiapam 
(Salvin 1?) ; Panama®® (Dow ?).—Northern Peru ®. 
Here described from four specimens, 260-300 mm. in total length, from Panama 
and Chiapam. 
2. Pomadasis macracanthus. 
Pristipoma macracanthum, Ginth. Proc. Zool. Soe. 1864, p. 146', and Trans. Zool. Soc. vi. 1868, 
p- 416, t. 64. fig. 1”. 
Pomadasis macracanthus, Jord. & Fesler, Rep. U.S. Fish. Comm. 1893, p. 493°; Jord. & Everm. 
Bull. U.S. Nat. Mus. xlvii. 1898, p. 1332 *. 
Depth of body 23-3 in the length, length of head 24-3. Snout 14-12 as long as eye, the diameter of which 
is 43-53 in the length of head; interorbital width 44-5 in the length of head. Maxillary not extending 
to below the eye. 15 or 16 gill-rakers on the lower part of anterior arch. 44~49 scales in a longitudinal 
series, 4 or 5 between lateral line and middle of dorsal fin. Dorsal XII 13; fourth or fifth spine longest, 
2-4 the length of head. Anal III 8; second spine longest, about 3 the length of head. Pectoral 
a8 long, or nearly as long, as the head. Caudal slightly emarginate. Caudal peduncle about 1} as 
long as deep. Back dark; lower part of side silvery; sometimes 3 or 4 dark cross-bars on the side ; 
fins dusky. 
