8. HKMIEHAMPHUS. 275 



cc. Anai , ays more mcnierous than dorsal ; anal commencing before dorsal 

 Jin : Dermatogeuj's (r. Jfass.). 



35. Hemirliamphus fluviatilis. 



Hemirhamplius fluviatilis, Bleckcr, Nat. Tydschr. Ned. Ind. i. p. 95 ; 

 cop. in Verh. Bat. Genontsch. xxiv. Snoek. p. 16 ; Peters, Monatsb. 

 Akad. Wiss. Bcrl. 1865, p. 1.32. 

 Dermogenys pusillus, (v. Hass.) Bleck. Ned. Tydschr. Dierk. iii, 

 p. 165. 



D. 9-10. A. 14. P. 11. V. 6. 

 The length of the head is two-sevenths, that of the snout one- 

 fifth of the total (with the caudal) ; upper jaw much longer than 

 broad, one-half the length of the lower. Interorbital space concave, 

 about as wide as the orbit. The dorsal fin commences behind the 

 anal ; ventrals inserted at the posterior limit of the third fifth of the 

 total length. Caudal fin rounded. 

 Rivers of Java. 



a. Two and a half inches long. From Dr. Bleeker's Collection. 

 36. Hemirhamphus brachjmotopterus. 



Sleeker, Verh. Bat. Geti. xxv. Beng. 8f Hind. p. 146. 

 D. 9. A. 15. 

 The length of the head is contained thrice and a quarter, that of 

 the snout four times and two-thirds in the total length (with the 

 caudal); upper jaw broader than long. The diameter of the eye is a 

 little less than the width of the interorbital space, and about one- 

 half of the length of the postorbital part of the head. The dorsal fin 

 commences behind the anal ; caudal convex. {Bl.) 

 River Hooghly. 



37. Hemirliamphus sumatranus. 



Hemirhamphus sumatranus, Bleeker, Nat. Tydschr. Ned. Ind. v. p. 526. 

 Dermogenys smnatranus, Bleek. Nederl. Tydschr. Dierk. iii. p. 167. 



D. 10. A. 16. P. 10. L. lat. 43. 



The length of the head is contained nearly thrice, that of the 

 snout four times and three-fourths in the total (with the caudal) ; 

 upper jaw nearly twice as long as broad. The diameter of the eye 

 is a little less than the width of the interorbital space, and two-thirds 

 of the length of the postorbital jjart of the head. Ventrals inserted 

 posteriorly in the third fifth of the total length. Caudal convex. 

 Body without silvery band. {Bl.) 



Rivers of Sumatra. 



a. Type of the species, in bad state. From Dr. Bleeker's Collection. 



T 2 



