3^2 



tile. A single series of teeth in the jaws or this series followed 

 behind by a (ew more series of smaller teeth. No teeth on 

 vomer. Head scaly above and on operculum. Scales rather 

 large. Dorsal short, its origin behind that of anal. Pectorals 

 situated high up. Ventrals far from pectorals. Caudal rounded. 

 Five branchiostegals. Gillmembranes broadly united, free from 

 isthmus. No pseudobranchiae. 



Distribution: Fresh and brackish water of Africa, Asia, 

 Japan, indo-australian Archipelago to the east as far as Celebes 

 and Timor. 



These small fishes are mosquito-distroyers. 



Key to the indo-australian speciesofAplocheilus. 



1. L). 7; A. 21 — 23. L. tr. 10 A. javaniciis p. 372. 



2. D. 7 — 9; A 17 — 21. L. tr. 14. 



a. Origin of anal midway between base of caudal and 



pupil. Origin of ventrals midway between snout and 



end of anal A. celebcusis p. 373. 



/'. Origin of anal nearer to base of caudal than to 



hindborder of eye. Origin of ventrals nearer to end 



of anal than to snout A. timor crisis p. 373. 



I. Aplocheilus javanicus Blkr. 



Aplocheilus javanicus Bleeker, Nat, Tijdschr. Ned. Indie VII. 1854, p. 323. — 

 Ichth. Arch. Ind. Prodr. II. Cyprini i860, p. 490. — Atl. ichth. III. 1863, p. 141. 



Haplochilus javanicus Giinthei", Cat. Brit. Mus. VI. 1866, p. 311. 



Haplochilus javanicus v. trilineata Popta, Notes Leyden Museum XXXIV. 

 191 1, p. 13. 



Aplocheilus javanicus Max Weber, Siboga-Exp. Fische, 1913, p. 91. 



D. 7; A. 21 — 23; P. 1. 10 — II; V. 6; L.l. 29 — 30; L.tr. 10. 



Compressed, head and anterior part of back flattened. Height 

 3.5 — -^.^ f 4 — 4.5 in length with caudal. Head about 3.7, about 

 4.5 in length with caudal. Eye about 2.5, longer than snout, 

 scarcely longer than postorbital part of head and about equal 

 to interorbital space. Cleft of mouth small, horizontal. Corner 

 of mouth more than half length of snout from frontborder of 

 eye. Origin of dorsal separated by 22 or 23 scales from large 

 scales on occiput; above last third of anal. Origin of anal midway 

 between base of caudal and pupil. Pectorals as long as head. 

 Ventrals midway between snout and end of anal or some- 

 what nearer to snout. Caudal rounded. Colour yellow, belly 



