Jordan and Evermann. — Fishes of North America. 907 



Serinht hipinnuUitti, QuoY & Gaimard, Voy. Urauic, Zoiil., i, 3G3, pi. 61, fig. rt, 1824, Keeling 



Islands. 

 Serinla pinnnlnia,* PoET, Memorias, ii, 233, ISOO, Havana. 

 y^/u^a/K J)i;nH»MtoH.«, Bennett, 'Wlialing Yoy., IT, 283, 1835; Meek A- Hom.man, I'ror. Ac. Nat. 



Sci. Phila., 1889, 42. 

 FJtigalis hipinnnlula, Gf-NTiiER, Cat., II, 468, 1860. 

 Ehujiilk piiiiiiilalns, Jordan & flii.itEUT, Synopsis, 440, 1883. 



415. DECAPTERUS, Bleeker. 

 (Mackerei. Scads.) 



Decaptent/', Blef.ker, Natumk. Tydsclir., ^■, 417, 1855, {hirra). 

 Eiidomntodm, Gii.i., Pioc. Ac. Nat. Sci. Pliila., 1862, 261, {kurroides). 

 Gjimnepignathu.f, Gill, 1. c, 261, {macrosoma). 

 tjvepigi/mnus, Gill, / c, 201, {hypoibts). 



Body elongate, little compressed, almost perfectly fusiform. Head 

 short, pointed. Mouth rather small; jaws about equal, the dentition 

 feeble; maxillary rather broad, with a supplementary bone. Premaxil- 

 laries protractile. Scales moderate, enlarged for the whole length of the 

 lateral line, but spinous and bony posteriorly only ; second dorsal and 

 anal each with a single detached finlet ; free anal spines very strong; 

 first dorsal well developed, persistent; pectorals comparatively short. 

 Abdomen rather shorter than anal fin. Gill rakers long and slender. 

 Species numerous. ((5e/ca, ten; Trrepov, fin; there being 10 fins, counting 

 the spurious finlets and excluding the free spines.) 



n. Shields of lateral line numerous, 40 to 50 in number; depth 5 in length; teeth present on 



jaws, vomer, ami palatines; none on tongue. 



h. Dorsal with 30 soft rays; lateral line anteriorly with about 12 distinct, small black 



points. PUNCTATI'S, 1297. 



;./.. Doraal with 27 soft rays. scombbinus, 1298. 



aa. Shields of lateral line few, 20 to 30 in number. 



c. Teeth minute on Itoth jaws, vomer, palatines, and tongue; shields 22 to 28; depth 5 in 



length. RANCT.E-TIEI.EN.T?, 1299. 



cc. Teeth distinct on lower jaw and tongue; caudal keel of 30 distinct shields; depth 6}4 



in length. hypodus, 1300. 



ccc. Teeth obsolete; caudal keel of 25 shields; depth 5% in length. macarellus, 1301. 



1297. DECAPTERUS PUNCTATUS (Agassiz). 

 (Si'AD; Round Robin; Cioar-fish ; Quia-qiia.) 



Head 4*; depth 5. D. VIII-I, 30-1; A. 11-1,24-1. Eye rather small, 

 shorter than snout, about equal to the width of cheeks or the inter- 

 orbital space. Maxillary reaching front of eye. Teeth on vomer and 

 palatines, none on tongue ; teeth in Jaws in single series. Lateral line 

 little arched ; arch of lateral line nearly as long as straight part ; scutes 

 numerous, deep, crowded, about 40. Pectorals short, shorter than head. 

 Breast, cheeks, and top of head scaly. Bluish above, silvery below; a 

 dark opercular spot. Length 12 inches. Cape Cod to Brazil ; occasionally 



* There seems to be no difference between the American form called pinnulahis and the East 

 Indian bipinmilatut. 



