C<>Mr.\RATl\E STUDY OF SCOMBROID FISHES. 413 



A liirgo s])tH;ies «if disloiuinu, abnit 8 era in lengtb, is almost always found 

 in the stnimich. 



Gemis Grammatorcynus Clill. 



GnimiBaloroynns, Gill, 18 12 ; Klunzinger, 18S1. 

 Nesogrnmmus, Evermnnn & Scale, 1807. 



Body elougiitol, compressed, nud »ivered with small scales. Corselet 

 indistinct. Mouth rather small, maxillary not reaching the middle of the eye. 

 A deep gr<iove in the skiu from the comer of the mouth, as in many other 

 forms of the nuickerel-like fishes. Tongue liroad. Teeth elongated, trenchant. 

 Villous teeth on the vomer and paLitim;?. Two dorsals continuous. Second 

 doi-sal and anal are divided into fiulets in the hind pai-t, and are lower than 

 the first dorsal. Gill-rakei's short and strong. Opercle ^vith a shallow notch- 

 at the posterior margiu. The lateral keel of the caudal paduncle is low and 

 sicall, covered with a row of pored scales. Two lateral lines on each side of 

 the body. 



Fish of this genus are also an abeirant fonn of the Oybiidae. The in- 

 significant keel on the caudal peduncle, the rather small numljer of vertebrae, 

 intlistinct cjrselet, slightly notched opercle, backward origin of the first doi-sal 

 etc. connect this genus more or less with the Scombridae ; but trenchant teeth, 

 continuous dorsals, large broad tongue, renal portal veins, short strong gill- 

 rakere, descending pylorus, dendritic tuljes to which pyloric coeca open, bent second 

 basibranchial, etc. indicate that this genus is much closer to the other genera 

 of the Cybiidae. 



Only one species is known from the ti'opical seas and adjacent waters of 

 the Indo-Piicific region. 



Grammatorcynus bilineatus (RüpiJel). 



Kusarah. 



Figs 8, 62. 



Thynnus hUneatits, Klippel. N. W. Fische. 33, Tiif. 12, Fig. 2. 1840 ; Günther, Cat. H, 



3GB, 186>. 

 Gnimnvitorci/nns hiUneatas. Gill. Froc. Ao. Philad. 125 1862. Klunzinger, Fisob. Roth Meer, 



113, I88i; Kishinouye, Sui. Gak. Ho, I. 86. 1915 

 yesorfr.iminus ;(fcr>oni, Evermanu A Seal«, Bull. Bur. Fish. XXVI, 61, 1937. 



D. 12, 9, 7. A. 10, 7. Gill-rakers 5 + 16. Vert. 13 + 18. 



