578 



Fishery Bulletin 90|3). 1992 



Figure 4 



Geographic distribution of Umbrina roncador (O), U. xanti ( • ) plus one specimen from Chile 

 at 19°36'S, 70°13'W), and U. galapagorum (A). 



mm), herein designated; pa- 

 ralectotypes USNM 316653, 

 [removed from USNM 7156] 

 USNM 2996, USNM 3693, 

 USNM 3694, MCZ 35976 

 [removed from USNM 

 3693]). 

 Umhrina sinaloae Scofield 

 1896:220-221 (original de- 

 scription: syntypes CAS- 

 SU 1632, Mazatlan, Sinaloa, 

 Mexico). 



Diagnosis A small species of 

 Umbrina (max. length 295 

 mm) characterized by the 

 following: gill cover dark to 

 black, particularly in area of 

 pseudobranch; peritoneum 

 usually light ventrally, punc- 

 tate or occasionally dark dor- 

 sally; soft dorsal fin rays 

 usually 27-29; soft anal rays 

 usually 6; pectoral rays usual- 

 ly 17-18; procurrent caudal 

 rays usually 8-9 -t- 8-9; dorsal 

 spines X -i- 1; gill rakers usual- 

 ly 17-19; vertebrae 10 + 15; 

 barbel relatively elongate, 

 slender; length of second anal 

 spine, X 12% SL; body depth 

 X 29%; eye length, x 7%; up- 

 per jaw length, x 10%; pec- 

 toral fin length, x 16%. 



Figure 5 



Vmbrina xanti, 188mmSL, SIO 63-522. 



