144 



jaw 2.6 in trunk. Entire head 2.2, 2.6 in length with caudal. 

 Lower jaw beyond extremity of upper jaw 4.1 in length, 

 4.8 in length with caudal. Eye 1.4 in postorbital part of head, 

 about equal to interorbital space. Triangular part of upper 

 jaw longer than broad. Dorsal beginning far before base of 

 ventrals, thrice as long as anal, rounded. Pectorals about equal 

 to head without snout. Ventrals about equal to postorbital 

 part of head, their base nearer to caudal than to head. Caudal 

 rounded. Colour of preserved specimens brownish. Length 

 "jj mm. [Specimens of Bleeker's collection in the Leiden 

 Museum seen by us]. 



Habitat: Singapore; Biliton; Banka; Borneo (Palandok, 

 Sadong Matang). 



In rivers. 



2. Hemirhamphodon pogonognathus (Blkr.) [Fig. 54, p. 143]. 



Hemirhamphus pogonognathus Bleeker, Nat. Tijdschr. Ned. Indie V. 1853, p. 193. 

 Hemirhamphodon pogonognathus Bleeker, Ned. Tijdschr. Dierk. III. 1866, p. 169. — 



Atl. ichth. VI. 1866— 1872, p. 66. 

 Heviirhamphiis pogonognathzis Giinthev, Cat. Brit. Mus. VI. 1866, p. 273. 

 HeinirhaDiphodon kukcnthali Steindachner, Abh. Senckenb. Naturf. Ges. XXV. 



1901, p. 450. 

 Hemirhamphus pogonognathus Volz, Zool. Jahrb. (Syst.) XIX. 1 903, p. 394. 



D. 15—17; A. 6— 7 '); P. 1.7—8; V. 1.5; L. 1.94— 100. 



Compressed, the breadth of the body going 1.5 in its height. 

 Height 10 — 10.4, II — 12 in length with caudal. Head from 

 tip of upper jaw to branchial opening 2.5 — 2.8 in trunk. Entire 

 head, excluding the barbellike prolongation on tip of lower 

 jaw, 2.2 — 2.4 in length, 2.5—2.7 in length with caudal. Lower 

 jaw beyond extremity of upper jaw (excluding the barbellike 

 prolongation at its tip) 4.3 — 5.1 in length, 5 — 5.8 in length 

 with caudal. Eye about equal to interorbital space and about 

 1.2 in postorbital part of head. Triangular part of upper jaw 

 longer than broad. Dorsal beginning behind origin of ventrals 

 but before that of anal. Base of anal about 2.5 in that of 

 dorsal. Pectorals about equal to head without snout. Ventrals 

 somewhat longer than pectorals, the inner ray the longest. 

 Base of ventrals midway or nearly midway between caudal 

 and head. Caudal rounded. Colour of preserved specimens 



l) Steindachner 1. c. mentions A. 9, but this is probably a misprint, as on the 

 beautiful and exact figure on Plate XVII 1. c. only 7 rays are represented. 



