384 NEW YORK STATE MUSEUM 



depressed, with a rather large keel on each side; first dorsal 

 short, separated from the second by a considerable interspace, 

 second dorsal and anal small, each with seven or eight finlets; 

 pectorals and ventrals small; no air bladder; branchiostegals 

 seven; pyloric caeca dendritical; gill rakers very long and slen- 

 der, numerous; vertebrae 39 i*n number, peculiarly modified, 

 essentially as in G y m n o s a r d a. 



19.3 Auxis thazard (Lacep^de) 

 Frigate Mackerel 



Scomber thazard Lacepede, Hist. Nat. Poiss. Ill, 9, 1802, Ooast of New 



Guinea. 

 Auxis vulgaris Cvvmn & Valenciennes, Hist. Nat Poiss. VIII, 139, 1831, 



Mediterranean. 

 Auxis rochei Gunther, Oat. Fish. Brit. Mus. II, 369, 1860; Jokdan & Gil- 



HKKT, Bull. 16. U. S. Nat. Mus. 425, 1883. 

 Au.ris t hazard Jordan & Gilbert, op. cit. 911, 1883; Jordan & Evermann, 



Bull. 47, U. S. Nat. Mus. 867, 1896, pi. CXXXIII, fig. 365, 1900. 



Body Stout, subterete, fusiform, tapering to a very low caudal 

 peduncle, the greatest depth one fourth of total length without 

 caudal, the width nearly two thirds of the depth; the least depth 

 of caudal peduncle about two fifths of length of iris; head short, 

 conical, pointed, its length one fourth of the total to end of mid- 

 dle caudal rays, its width two thirds of its length, the width of 

 I lie interorbital space one half postorbital length of head; snout 

 short, as long as the eye, one fifth as long as the head; the lower 

 ja w not projecting when the mouth is closed, the maxilla reach- 

 ing Lo below middle of pupil, the mandible two fifths as long as 

 I he head and reaching nearly to below hind margin of orbit. The 

 eye is as long as the snout and one fifth as long as the head. 

 riH' spinous dorsal originates a little behind the origin of 

 P'H.MMl and ventral, at a distance from tip of snout nearly equal 

 t" "'li.' Ihird ..r total longth to caudal base; its base is nearly one 

 I'.'lf as lonu :,s il,,. ],ead; the second spine longest, two fifths as 

 i-.i- as Uw l.,.:,(l. ihe last spine minute, about one sixth as long 

 ^'s Hh. <..v. TIu- interspace between the dorsals equals the 

 l^ii;.Mi. ui- tl,<. iH.a.l without the snout. Tho second dorsal is in 

 adva.M-.. or 11,,- anal; its base is about one fourth as long as the 

 l'<a.i; iis l..nt,n.st ray equals snout, and its last ray is less than 



