576 



Fishery Bulletin 90(3). 1992 



Figure 1 



Umbrina bussingi, 230nimSL, LACM 9099-28. 



with anterior, slit-like (vertical) pore (large adults); 

 peritoneum dark to dusky ventrally and laterally, 

 lighter dorsally; soft dorsal fin rays 21-23; soft anal 

 rays 7; pectoral rays usually 18-19; procurrent caudal 

 rays 7-8 + 7-8(9); dorsal spines X + I; gill rakers usu- 

 ally 19-20; vertebrae 10 -i- 15; length of second anal 

 spine, X 17% SL; body depth, x32%SL; eye length, 

 i9%SL; upper-jaw length, xl3%SL; pectoral fin 

 length, 5 26%SL. 



Description Counts and measurements are given in 

 Tables 1-6. Soft dorsal and anal fin rays as in Diag- 

 nosis. Pectoral rays 17-19; gill rakers 17-22; barbel not 

 fully developed (usually bulbous) on specimens >154 

 mm; pigment inside operculum appears externally as 

 large, dark spot; no dark-brown stripes at any size; 

 background color uniformly light- (in young, to ~155 

 mm) to medium-brown; second anal spine relatively 

 long and thick; body fairly deep; eye large, relatively 

 smaller in larger specimens, but length always greater 

 than snout length; head and upper jaw relatively long; 

 pectoral fins extremely long, proportionately shorter 

 at larger sizes; lateral line scales 47-49, x 47.95, SE 

 0.18; spinous dorsal fin dark to dusky, lighter in smaller 

 specimens; soft dorsal, pelvic, and caudal fins light to 

 dusky, becoming darker with increasing size, most pig- 

 ment on pelvic and caudal fins appearing on distal two- 

 thirds; pectoral fins essentially unpigmented; anterior, 

 proximal portion of anal fin darkly pigmented at most 

 sizes, dark pigment on most of fin at larger sizes. 



Distribution Southern Gulf of California, south of 

 Los Frailes to Golfo de Chiriqui, Panama (Fig. 2). A 



relatively deep-living species, taken in depths of 32 m 

 to >183m (Lopez S. 1980). 



Umbrina roncador Jordan and Gilbert 

 Figure 3 



Synonymy 



Umbrina roncador Jordan and Gilbert 1882:277-278 

 (original description: holotype USNM 29371, Bahia 

 Pequena, Baja California Sur). 



Sciaena thompsoni Hubbs 1921:1-3 -i- pi. (original de- 

 scription: holotype UMMZ 55053, Santa Catalina I., 

 CA). 



Diagnosis An intermediate-sized species of Umbrina 

 (reported to ~381mm) characterized by the following: 

 inside gill cover dark to black, particularly in area of 

 pseudobranch; peritoneum usually dark; soft dorsal fin 

 rays usually 26-29; soft anal rays usually 7; pectoral 

 rays usually 17-18; procurrent caudal rays usually 9-10 

 -I- 8-9; dorsal spines X -i- 1; gill rakers usually 18-20; 

 vertebrae 10 -i- 15; barbel relatively elongate, slender, 

 more robust at sizes greater than ~200mm; length of 

 second anal spine, x 12% SL; body depth, x 29%; eye 

 length, x 6%; upper jaw length, x 11%; pectoral fin 

 length, X 17%. 



Description Counts and measurements are given in 

 Tables 1-6. Soft rays of second dorsal fin 24-31; soft 

 anal rays 6-7; pectoral rays 15-20; gill rakers 15-22; 

 snout length greater than eye diameter (adults); pig- 

 ment inside operculum usually appears externally as 

 large, dark spot, dark pigment around pseudobranch 



