58 



2. Subfam. Rasborinae. 



Oblong or elongate, compressed, belly not trenchant, more 

 or less rounded. Dorsal short or of moderate length, with 

 6 1 6 branched rays, without an osseous spine, its origin behind 

 that of ventrals. Anal short or elongate, with 5 to 17 branched 

 rays, its origin generally below the end of the dorsal. Pectorals 

 and ventrals always developed. Caudal forked. Mouth terminal, 

 obliquely ascending; lower jaw often projecting, generally 

 provided with a symphysial knob, fitting in an emargination 

 or incision of the upper jaw. A pair of rostral and maxillary 

 barbels or the latter or both are rudimentary or absent. Scales 

 small, moderate or large; lateral line if present abruptely 

 bending downwards; if complete running along lower half of 

 tail. Gillopenings reaching to below praeoperculum or to below 

 eye. Pharyngeal teeth lanceolate or uncinate in a triple or 

 single series. 



Artificial key to the i n do-aust ralian genera. 



I. Barbels absent. Anal with 5 branched rays. Mouth rather 



small, with a symphysial knob Rasbora p. 58. 



II. Barbels present sometimes rudimentary. 



a. Mouth small, without symphysial knob, barbels long. 



Anal with 5 branched rays Esomus p. 82. 



b. Mouth small, with 'symphysial knob, barbels long. 



Anal with II or more branched rays Danio p. 84. 



c. Mouth wide, with symphysial knob, barbels short or 

 rudimentary. Anal with 6 8 branched rays Ludosoma p. 85. 



i. Rasbora Bleeker. 



(BLEEKER, Nat. Tijdschr. Ned. Indie XX. 18591860, p. 435). 



Oblong or elongate. Mouthopening rather small, ascending. 

 Lower jaw prominent, provided at its symphysis with a knob, 

 fitting in a more or less superficial emargination of the upper 

 jaw. Barbels absent. Dorsal with 7 or 8 branched rays, its 

 origin between that of ventrals and anal. Anal short, with 5 

 branched rays. Scales large or of moderate size. Lateral line 

 abruptly bending downward and, if complete, running along the 

 lower half of the tail. Gillopenings reaching to below praeoper- 

 culum. Gillmembranes connected with the isthmus. Pseudo- 

 branchiae present. Pharyngeal teeth 5 to 4, 4 to 2, i or 2 I 

 or 2, 2 to 4, 4 to 5. 





