1328 Bulletin 4.7, United States National Museum. 



about one scale in width, beginning at posterior margin of opercle and 

 extending backward in a direct line, meeting the lateral line under pos- 

 terior fourth of soft dorsal, thence continuing to base of caudal chiefly 

 below lateral line; ceuter of each scale in the band with a faint dark 

 blotch, these forming a rather distinct darker line through the mid- 

 dle of the light one; 3 other faint dark bands along side, 1 above and 2 

 below the light band; opercle with a yellowish tinge, a dark spot at 

 angle; fins all light yellowish, soft dorsal mottled with blackish; a 

 faint blotch on axil of pectoral. Pacific coast of tropical America; very 

 common at Mazatlan and Panama, south to northern Peru; quite variable 

 in depth of body, width of preorbital, and length of spines. Here described 

 from a specimen 9 inches in length, from Rio Mulege, Lower California. 

 (leuciscus, a chub or shiner, from AevxoZ, white.) 



Pristipoma leuciscus, GUNTHER, Proc. Zool. Soc. London 1864, 147, San Jose de Nicaragua, 



Chiapas. 

 Pristipoma leuciscus, var. elongatus, STEINDACHNER, Neue und seltene Fische ans dem k. k. 



Museum, 30, 52, pi. 9, fig. 2, 1879, Tumbez, west coast of South America; an elongate 



specimen, probably of the same species. 



Pomadasys leuciscus, JORDAN & GILBERT, Proc. U. S. Nat. Mus. 1881, 387. 

 Pomadasis elongatus,* JORDAN & GILBERT, Proc. U. S. Nat. Mus. 1882, 352; specimens with 



slender body and narrow preorbital ; EVERMANN & JENKINS, Proc. U. S. Nat. Mus. 1891, 



150; JORDAN & FESLER, I. c., 495. 

 Pomadasis leuciscus, JORDAN & FESLER, 1. c., 495; JORDAN, Fishes of Sinaloa, 462, 1895. 



1698. BRAi;HYDEUTERUS AXILLABIS (Steindachner). 

 ^ 



(BURRO BLANCO.) 



HeadSf; depth 3^;. D. XII, 16; A. Ill, 9; scales 6-50-10. Body rather 

 robust, compressed, the back moderately arched ; dorsal fin deeply notched ; 

 preopercle with small serrse ; suprascapula finely serrate ; preorbital broad, 

 about as wide as eye; anal spines small or moderate, the second little, if 

 any, longer or stronger than third, 3^ to 4 in head ; anal lower than the soft 

 dorsal; soft dorsal and anal largely covered with small scales; pectoral 

 fin long, nearly equal to head. Color grayish-silvery, with light and dark 

 stripes along rows of scales, these sometimes obscure; fins unspotted; 

 body with faint dark crossbands; back and sides with dark stripes 

 formed by dark spots along the rows of scales; a large inky-black axillary 

 blotch, encroaching on the rays of the pectoral fin, a color mark by which 

 the species may be known at once. Length nearly a foot. Pacific coast 

 of Mexico ; not rare, but known only from about Mazatlan and Guaymas. 

 (axillaris, from the black axillary spot.) 



Pristipoma axillare, STEINDACHNER, Ichth. Notizen, vin, 7, 1869, Mazatlan. 

 Pomadasis axillaris, EVERMANN & JENKINS, Proc. U. S. Nat. Mus. 1891, 151; JORDAN & 

 FESLER, I. c., 494; JORDAN, Fishes of Sinaloa, 462, 1895. 



