280 PRISTIPOMATIDJE. 



broad band of villifoain teeth in front, and several larger ones in its 

 external series ; the viUiform band is very narrow on the lateral 

 parts of the bone. The villifonn band of the mandibula is much 

 narrower ; but there is an external series of teeth, rather larger and 

 more numerous than in the upper jaw. There is a very narrow 

 transverse band of exceedingly fine teeth on the vomer. The pha- 

 ryngeal bones are separated from each other, the upper as well as 

 the lower ones ; they are armed with villiform teeth. 



x"he operculum is distinguished by a very long and strong spinous 

 process, longe'* than its greatest width ; there is another small one 

 above. Suboperculum narrow, with a small notch to receive a limb 

 of the coracoid ; not serrated. Intcroperculum shorter and broader, 

 with the lower limb distinctly serrated. The axes of the two limbs 

 of the praeoperculum form a very obtuse angle ; they are represented 

 by a thick ridge, from which striae radiate, terminating in strong 

 spines ; there are about fifteen spines round the edges of the bone, 

 two of which (at the angle) are strongest ; those of the lower limb 

 are very feeble. The suprascapula and the coracoid are distinctly 

 denticulated, and the latter exhibits flat striae besides. The pubic 

 bones are shaped as in the Percina ; namely, each is formed by three 

 plates, the internal thinnest, broadest, and closely joined to that of 

 the other side. The two other plates, situated in one plane vertical 

 to the third, are low. 



There are ten abdominal and fifteen caudal vertebrae. The fourth 

 has a broad process, to which the air-bladder is fixed. The second 

 rib is remarkably broad in its upper half. The first interhaemal is 

 of moderate strength, equal to the length of the second vertebra to the 

 seventh, and is fixed to the haemals of the eleventh and twelfth. 



10. Therapon trivittatus. 



Russell, ii. pi. 126. 



Coius trivittatus, Buch. Ham. pp. 92, 370. 



Therapon puta, Cuv. <^- Vol. iii. p. 131 ; Bleek. Pare. p. 50; Cuv. Rbgne 



Anim. 111. Poiss. pi. 12. f. 2. 

 trivittatus. Cant. Catal. p. 19. 



D. 1^. A. |. L. lat. 90-100. Cffic. pylor. 7. Vert. 10/15. 



The height of the body is 3f- 4^ in the total length, the length of 

 the head 4-J-. The snout is 1^ the interapace between the eyes. 

 Praeoperculum serrated, with very long spinous teeth at the angle ; 

 operculum with two spines, the lower of which is elongate and 

 strong. Greenish grey, with three straight brown longituchnal 

 bands, the inferior of which extends from the ej'e to the tail ; the 

 spinoxis portion of the dorsal fin blackish between the third and 

 eighth spines ; two blacldsh bands obliquely crossing each lobe of 

 the caudal. 



Indian Seas. 



a. Adult : skeleton. Itidia. From Mr, Frank's Collection. 

 h. Adult. Ceylon. From Mr. Cuming's Collection. 



