582 



Fishery Bulletin 90(3). 1992 



vertebrae 10 + 15; barbel relatively short, stout; length 

 of second anal spine, x 19% SL; body depth, i32%; 

 eye length, x 8%; upper jaw length, x 11%; pectoral 

 fin length, x2Q%. 



Description Counts and measurements are given in 

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

 nosis. Pectoral rays 16-18; gill rakers 16-21; barbel 

 bulbous at 51mm, more or less fully developed at 82 

 mm; no brown stripes on a 51 mm specimen, all stripes 

 evident by 82 mm; second anal spine extremely long 

 and thick; caudal peduncle deep; pectoral fins fairly 

 long; lateral line scales 46-50, x 47.88, SE 0.44; dor- 

 sal and anal fins dusky or dark; caudal fin usually 

 dusky; pectoral and pelvic fins with little or no pigment. 



Distribution Known from five collections (one was 

 split), ranging from Costa Rica to Colombia (Fig. 2). 

 No depths recorded. 



Umbrina wintersteeni n. sp. 

 Figure 10 



HoJotype SIO 60-366, 193mm; Bahia Almejas, Baja 

 California Sur, F.H. Berry and party, 25 August 1960. 



Paratypes 146 specimens (49-298 mm) from 21 col- 

 lections, all from Mexico: Baja California-west coast: 

 SIO 60-366 (29); SIO 62-126 (10); SIO 64-84 (49); CAS 

 35536 (4); USNM 316655 (5); AMNH 5514a (1). Gulf 

 of California: UCLA W50-27 (2); UCLA W52-48 (5); 

 UCLA W52-49 (2); UCLA W52-50 (1); UCLA W53-84 

 (6); UCLA W53-95 (8); UCLA W57-34 (1); UCLA 



W57-36 (4); UCLA W57-42 (4); SIO 65-281 (3); SIO 

 76-275 (2); LACM 38104-26 (4); CAS-SU 375 (1); 

 CAS-SU 2855 (3); CAS-SU 47933 (1); AMNH 5498 (1). 



Diagnosis A relatively small species of Umbrina 

 (max. size 298mm) characterized by the following: 

 inside gill cover pale to lightly punctate, little or no 

 pigment in area of pseudobranch; peritoneum pale or 

 lightly punctate; soft dorsal fin rays usually 25-27; soft 

 anal rays usually 6; pectoral rays usually 16-18; pro- 

 current caudal rays usually 7-8 + 6-7; dorsal spines 

 X -I- 1; gill rakers usually 17-20; vertebrae 10 + 15; 

 barbel relatively short, stout; length of second anal 

 spine, x 14% SL; body depth, x 29%; eye length, x 7%; 

 upper jaw length, i 10%; pectoral fin length, x 17%. 



Description Counts and measurements are given in 

 Tables 1-6. Soft rays of second dorsal fin 23-28; soft 

 anal rays 5-6; pectoral rays 15-18; gill rakers 14-23; 

 snout length greater than eye length (adults); barbel 

 bulbous at 49mm, fully developed by ~100mm; lateral 

 line scales 48-51, x 49.14, SE 0.06; faint, brown 

 stripes at 49 mm, nearly all present by 80-90 mm; 

 ~8-ll dark, vertical bars on many juveniles, never on 

 specimens > 100 mm; dorsal, pelvic, and anal fins usual- 

 ly dusky to dark (Gulf of California specimens occa- 

 sionally with light-to-dusky pelvic and anal fins); caudal 

 fin dusky; pectoral fins lightly pigmented; background 

 coloration tan to gold dorsally, grading to white or 

 silver ventrally; dark-brown stripes: 15-20 oblique 

 dorsolaterally, 8-10 more or less horizontal laterally 

 in abdominal area, 4-5 horizontal on lateral caudal 

 peduncle. 



Figure 10 



Umbrina wintersteeni, holotype, 193mmSL, SIO 60-366. 



