gO 
Pristigaster tartoor Cuvier & Valenciennes, Hist. Nat. Poissons XX. 1847, p. 328. 
Pristigaster tartoor Bleeker, Verh. Bat. Gen. XXIV. 1852, Haringacht., p. 25, 
(ex parte). 
Opisthopterus tartoor Bleeker, Ned. Tijdschr. Dierk. III. 1866, p. 296. 
Pristigaster tartoor Giinther, Cat. Brit. Mus. VII. 1868, p. 460. 
Opisthoplerus tartoor Bleeker, Atl. Ichth. VI. livr. 25, 26. 1872, p. 123. 
Opisthopterus tartoor Day, Fishes of India 4°. 1878—1888, p. 646. 
B...6; Dy 15175) A. 50-00; ~ P. (14> 16 ele oa 
15.8.) 12-3. 
Elongate, very compressed, very convex from chin to anal. 
Dorsal profile of head concave, of back slightly convex. 
Height 3'/;—3"/,, head about 5, eye 23/,—3, much longer 
than snout and shorter than postorbital part of head. Maxil- 
lary twice in head, its supplementary bone reaches nearly as 
far as the maxillary itself, the ventral border of which is 
denticulated. Operculum rounded behind, praeoperculum trian- 
gular. Distance of the origin of the caudal to the end of the 
snout is 1*/, times its distance from the snout. The origin of 
the dorsal lies more than twice the length of the dorsal 
behind the vertical through the origin of the anal. Pectorals 
somewhat shorter than head. Scales deciduous, 28—30 sharp 
keeled and curved abdominal scutes. Teeth on the jaws, 
palatines, pterygoids and tongue. Gillrakers 28, stout, spinulous 
all round, twice as long as the branchial filaments, as long 
as pupil. Silvery, except on the back, a dark patch behind 
upper angle of operculum. Fins hyaline. Caudal with a dusky 
margin. Length over 200 mm. 
Nomen indig: Kentut (Batavia). 
Habitat: Java (Batavia!; Palabuan Batu); Sumatra (Bagan 
Api Api!). — British India. 
In sea. 
2. Opisthopterus macrognathus Blkr. 
Pristigaster tartoor Bleeker, Verh. Bat. Gen. XXIV. Haringacht., p. 25 (ex parte). 
Opisthopterus macrognathus Bleeker, Ned. Tijdschr. Dierk. III. 1866, p. 299. 
Pristigaster macrognathus Giinther, Cat. Brit. Mus. VII. 1868. p. 461. 
Opisthopterus macrognathus Bleeker, Atl. Ichth. VI. livr. 25, 26. 1872, p. 124. 
B. 6; D. 16—17; A. 59—63; P.. 133 Lol. 45—52; Ltr. 1293: 
Elongate, very compressed, very convex from chin to anal. 
Dorsal profile of head concave, back convex. Height 3'/,—3'/,, 
head about 5, eye about 3, '/, longer than snout, less than 
