NO. l8 MENHADEN, GENUS BREVOORTIA — HILDEBRAND 21 



tyrannus patronus 



Pectoral fin rather short, not reaching Pectoral fin generally longer, often 



base of ventral fin, generally leaving nearly reaching base of ventral, sel- 



3 or 4 vertical series of scales ex- dom leaving more than 2 vertical 



posed between its tip and base of rows of scales exposed between its 



ventral; its length 17 to 20 percent tip and base of ventral; its length 



of standard length, average 18.7 per- 19 to 23 percent of standard length, 



cent of standard length in 262 speci- average 20.9 percent in 87 specimens ; 



mens; composed of 15 to 18, average composed of 14 to 17, average 15.6 



17.5 rays, in 213 specimens. rays, in no specimens. 



Total number of vertebrae 47 to 49, Total number of vertebrae 45 to 47, 



rarely 45, 46 or 50, average 48 in rarely 42, 43, 44 or 48, average 45.8 



194 specimens. in 117 specimens. 



Total number of ventral scutes 30 to Total number of ventral scutes 28 to 



35, average 32.5 in 237 specimens. 32, average 29.8 in 152 specimens. 



Range. — Known from the Gulf of Mexico, from Appalachicola 

 (also reported from Tampa), Fla., to Brazos Santiago, Tex.; adults 

 generally taken in outside waters running high in salinity. 



BREVOORTIA PECTINATA Jenyns 



Lacha, Savelha 

 Figure 4 



Alosa pectinata Jenyns, 1842, p. 135, pi. 25, Bahia Blanca, Argentina (original 

 description). 



Chipca pectinata Gunther, 1868, p. 437, "Northern Patagonia" (description). — 

 Berg, 1895, p. 18, "Mar del Plata. — Montevideo. — Embocadura del Rio de la 

 Plata" (reported abundant in the winter in the Rio de la Plata). — Pozzi 

 and BoRDALE, 1935, p. 155, Argentina (name only). 



Brevoortia pectinata Goode, 1878b, p. 38; 1879, p. 18, pi. 6 (compared with other 

 American forms; description). — Regan, 1917, p. 301 (synonymy; descrip- 

 tion; range). 



Brevoortia tyrannus Evermann and Kendall (not of Latrobe), 1906, p. 74, 

 Rio de la Plata, Argentina (synonymy, partly not this species; a com- 

 parison of South American examples, consisting in part of pectinata and 

 probably in part of aurea, with North American specimens ; differences 

 noted, but not considered of specific importance). — Thompson (not of 

 Latrobe) 1916, p. 405, Montevideo, Uruguay. (Note: A re-examination 

 of the specimens shows that they are B. pectinata.) — Devincenzi (not of 

 Latrobe) 1924, p. 187 (references; enumerations; remarks). 



B. pectinata imperfectly knozvn. — Although this species is well 

 marked, it has not always been recognized by authors, as shown by 

 the foregoing synonymy. Therefore, it seems desirable to offer a 

 somewhat detailed description, which is possible now that rather 

 adequate material is available. 



