Fishes of the Western Nort/i Atlantic 



187 



(i); and Puerto de (or Rio) Quequen, Mar del Plata, Argentina (2), in USNM, MCZ, 

 CNHM, MHNBA, UMMZ, SU collections. 



Distinctive Characters. This species generally has been identified in museum col- 

 lections with browmi-= hepsetus, which it resembles in size and general appearance, but 

 it differs sharply from it in the shorter and differently shaped maxillary and in the more 

 numerous gill rakers (Tables 11 and iii). 



Figure 36. Anchoa tricolor, 1 10 mm TL/gi mm SL, from Rio de Janeiro, Brazil, USNM 8772 r, with pectoral 

 fin enlarged. Drawn by Louella E. Cable. 



Description. Proportional dimensions in per cent of standard length, and counts, 

 based on at least 41 specimens, 63—1 18 mm TL. 



Body: depth 1 8.2-21. 

 Head: length 23.8-26.7. 

 Snout: length 4.15—5.9. 

 Eye: diameter 6.7—8.1. 

 Postorbital: distance 1 2 . 5— 1 3 . 5 . 

 Maxillary: length 18.2— 21.5. 

 Mandible: length 1 5.6-1 8.3. 



Anal fin: length of base 17.2-20. 

 Pectoral fin: length 14-14. 8. 



Scales: ca. 42—45. 



Gill rakers : 18-22 + 24-28. 



Fin rays: dorsal 14—16; anal il 



pectoral 13—15. 

 Vertebrae: 40-42 (5 specimens). 



-22 ; 



Body quite slender, moderately compressed, its depth 4.75-5.5 in SL. Head 

 3.75—4.2 in SL, its depth equal to its postorbital length and fully half of eye. Snout 

 projecting about half of its length beyond mandible, 4.75-5.8 in head. Eye 3.25-3.75. 

 Postorbital 1.85— 2.15 in head. Maxillary not sharply pointed, its upper margin 

 rounded, reaching to, or a little beyond, joint of mandible, 1.3— 1.4 in head. Mandible 

 1. 3-1. 5. Cheek rather broad, scarcely longer than eye, its posterior angle about c,^ . 





