SCOMBBIDJS. 207 



Length of head 3|, height of body 3| to 3 in length from 

 snout to middle of posterior margin of caudal fin. Eyes diameter 

 5 to 6 in length of head, 1| diam. from end of snout. The ver- 

 tical border of the preopercle is f the length of its horizontal 

 margin. Fins dorsal spines rather weak, anteriorly f height of 

 body and nearly twice as high as second dorsal. Pectoral reaches 

 to below tenth dorsal spine. Anal similar to second dorsal, it 

 commences on the vertical behind last dorsal ray. Caudal with 

 pointed lobes. Scales forming a corselet anteriorly, which ex- 

 tends from the base of the pectoral along the whole length of the 

 spinous dorsal. Colour back bluish, becoming silvery on the sides 

 and beneath. Four or five concave, longitudinal dark bluish bands 

 along the lower half of the abdomen posteriorly, ending on the 

 lateral line below the finlets. 



Hob. Indian and Atlautic Oceans ; attaining a considerable 



978. (3.) Tnyniras macropterus. 



Thynnus macropterus, Temm. Sf Schley. Fauna Japon., Poiss. p. 98, 

 pi. 51 ; Dai/, Fish. India, p. 253 (see synon.J. 



D. 14 | 3/12+jx^ P. 31. V. 1/5. A. 12 + ix^ C.28. 



Length of head and height of body each 3| in the length from 

 snout to middle of posterior margin of caudal fin. Eyes diameter 

 5 in length of head, 1 diam. from end of snout and also apart. 

 Preopercle with its posterior margin somewhat irregular in shape, 

 angle pretty well developed, its posterior third longer than its lower 

 margin. Fins the anterior dorsal spines about -| height of body ; 

 second dorsal considerably longer than the spinous and falciform. 

 Anal similar to soft dorsal. Caudal with pointed lobes. Corselet 

 with three distinct posterior prolongations, the upper, commencing 

 below the 7th dorsal spine, is continued along the base of the two 

 dorsal fins ; the second ceases below the 1 1th dorsal spine, and a 

 little above the middle of the body ; the lowest extends along the 

 abdomen to midway between the end of the ventral and com- 

 mencement of the anal. A well-developed keel on the lateral line 

 commencing from opposite the tenth, finlet. Colour greyish 

 along the back, becoming silvery below, tips of soft dorsal and 

 anal, as well as the finlets, yellow. 



Hob. Bed Sea, seas of India to Japan. 



3. Genus PELAMYS, Cuv. & Val. 

 Syn. Gymnosarda and Orcynopsis, Gill. 



Branchiostegals seven ; pseudobranchiae. Body rather elongate 

 and slightly compressed. Cleft of mouth deep. Bather strong 

 teeth in jaws, none on vomer, present on palarines. Two dorsal 

 fins, the spines feeble or of moderate strength, finlets behind soft 

 dorsal and anal fins. Scales small, those in the anterior portion of 



