432 



Fishery Bulletin 94(3), 1996 



Table 2 



Number of gill rakers in populations of Auxis. 



36 



37 



:',s 



39 40 41 42 43 



4 1 



45 46 47 48 



19 



A. /. thazard 



Western Atlantic 

 Eastern Atlantic 

 Indian Ocean 

 Western Pacific 

 Central Pacific 



Total 



A. t. brachydorax 



Eastern Pacific 

 Galapagos 



Total 



A. r. rochei 



Western Atlantic 

 Eastern Atlantic 

 Mediterranean 

 Indian Ocean 

 Western Pacific 

 Central Pacific 



Total 



A. r. eudorax 



Eastern Pacific 



Total 



3 7 



1 8 



1 10 



1 — — 



5—1 

 3 1 — 



9 1 



9 — — 



11 

 12 



1 I 

 2 



16 

 8 

 1 



7 

 3 



19 

 1 



2 

 26 



6 



3 

 12 



3 



13 

 1 



2 



in 

 3 



29 

 5 



11 



L3 



1 

 6 



1 



21 



1 



Auxis hira Kishinouye, 1915:23-24, fig. 16 (origi- 

 nal description, Japan); no type-specimens known. 

 Kishinouye, 1923:462-463, pi. 31, fig. 55 

 (anatomy). 



Diagnosis Auxis thazard thazard has fewer gill 

 rakers, 36-44, usually 38^2 (Table 2); a greater body 

 depth at the anal-fin origin (Fig. 10); a longer pecto- 

 ral fin (Fig. 11); and a wider corselet (Fig. 12) than 

 has A. thazard brachydorax. 



Description Corselet narrow under second dorsal- 

 fin origin ( 1-6 scales, usually 3, Table 1 ). Dorsal scale- 

 less area extends anteriorly beyond PI tip ( 1-16 mm, 

 usually 3-12 mm, Fig. 5). Width of corselet under 

 second dorsal-fin origin 0.5-3.5 mm, usually 0.5-1.0 

 mm (Fig. 3). 



Types 



Scomber thazard Lacepede, 1800. Neotype USNM 

 265418 (274 mm FL), Indonesia, Moluccas, Halma- 

 hera I., 0°58'N, 127°56'E; 12 Mar 1979; herein desig- 

 nated. Pectoral fin 41.2 mm, anterior extent of dor- 

 sal scaleless area 10.9 mm anterior to tip of pectoral 

 fin, width of corselet under second dorsal-fin origin 



1.4 mm, 3 scales in corselet under second dorsal-fin 

 origin, gill rakers 10 + 31 = 41. Fig. 9A. 



Auxis tapeinosoma Bleeker, 1854. HolotypeRMNH 

 6050 (200 mm FL), Japan, Nagasaki; S.N. Wolff. 

 Pectoral fin 20.5 mm; 2 scales in corselet under sec- 

 ond dorsal fin origin; gill rakers 10 + 30 = 40. Photo- 

 graph of type presented by Boeseman (1964, pi. 3, 

 fig. 10). 



Material examined 194 specimens (44.8—472 mm 

 FL) from 94 collections. 



Western Atlantic 10 specimens (240-471 mm FL) 

 from 10 collections. 



CAS SU 10874 (1, 305); Massachusetts; D.S. Jordan. 

 USNM 23347 (1, 343); MA, Provincetown; Aug 1879; S.F. 

 Baird. USNM 325226 ( 1, 449); NC, Oregon Inlet. UF 42693 

 ( 1, 344); NC, off Morehead City; 3 Jun 1973; G.F. Burgess. 

 UF 38841 ( 1, 402); FL, Government Cut off Miami; 31 Jul 

 1971; T. Iwamoto. UF 98890 ( 1, 240); FL, Marquesas Keys, 

 24°29'N, 83°00'W; 23 Sep 1992; G.F Burgess 92-5. UF 

 46979 (1, 253); Puerto Rico. USNM 325457 (1, 471); Car- 

 ibbean, west of St. Vincent, 13°16'N, 62°32'W; 27 Mar 1966; 

 RV Undaunted, cr. 2, sta. 114 (skeleton). USNM 325238 

 ( 1, 426); 10°47'N, 67°03'W; 24 Mar 1966; RV Geronimo, cr. 

 7, sta. 116. MNHN A.5792 (1, 248); Martinique; Plee; 

 paralectotype of Auxis vulgaris Valenciennes. 



