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PROCEEDINGS OF THE NATIONAL MUSEUM 



1923, p. 185 (synonymj' excluded; references in part; description; com- 

 parisons; range in part; Taboga Island, Gulf of Panama). — Herre, 1936, 

 p. 30 (synonymy and references in part; diagnosis; coloration; material; 

 South Seymour and Eden Islands, Galdpagos). — Fowler, 1938, p. 249 

 (South Seymour and Eden Islands, Galapagos) ; 1944, pp. 206 (synonymy 

 excluded; references in part; coloration; material; Playa Muerto, Panama), 

 481 (localities except Mexico). — Hildebrand, 1946, p. 88 (synonymy in 

 part; description; comparison; material; range in part; Panama Bay, Peru). 

 Harengula peruana Fowler and Bean, 1923, p. 2 (original description; Callao, 

 Peru). — Storey, 1938, p. 51 (compared to H. thrissina; on type specimen; 

 type locality doubtful). — Fowler, 1940a, p. 745, fig. 6 (type; Callao, Peru); 

 1944, p. 482 (CaUao, Peru). 



The above synonymy and references indicate that this species has 

 been confused with H. thrissina. 



The material recorded as Sardinella thrissina by Kendall and Kad- 

 cliffe (1912, p. 80; U.S.N.M. No. 65648) and Meek and Hildebrand 

 (1923, p. 186; U.S.N.M. No. 79516), from Panama Bay, was compared 

 with the holotype of H. peruana, a specimen 94 mm, in length (U.S.N. 

 M. No. 83156), collected by the Wilkes Exploring Expedition, in 

 Callao, Peru, with which they agree in proportions as well as in counts. 

 That material, including that by Hildebrand (1946, p. 88), differs 

 from the types of H. thrissina and other specimens from the Gulf of 

 California and Acapulco, Mexico, in the characters given in the follow- 

 ing paragraph. 





Figure 39. — Harengula peruana Fowler and Bean: From a specimen 80 mm. in length 

 (U.S.N.M. No. 128376), collected at Balboa, Canal Zone, Panama. 



H. 'peruana differs from H. thrissina chiefly in the number of scales 

 and gill rakers (see item 46 of the key, and table 1), the depth of the 

 body (2.7 to 3.2, usually 2.8 to 3.1, in length in H. peruana, and 3.0 

 to 3.7, usually 3.2 to 3.5, in H. thrissina), the head depth at occiput 

 (3.5 to 3.9, usually 3.6 to 3.8, in length in H. peruana, and 3.9 to 4.1, 

 usually 4.0, in H. thrissina), and the less strongly pigmented dorsal 

 fin. Characters in common with H. thrissina are the number of anal 

 rays (15 to 17, usually 16) and the small eye. The number of anal 



