CYPEINID.E. 299 



Synopsis of the Genera. 

 I. Cyprinin^. Barbels not more than two pairs, i£ present ; pharyngeal teeth 

 large, in small number, working against a sclerous plate attached to a 

 ventral process of the basioccipital, which extends under the anterior 

 vertebrse ; air-bladder usually large and divided into an anterior and a 

 posterior chamber, not surrounded by a bony capsule. 

 A. Anal with not more than 7 branched rays. 



1. Suborbitals narrow, not covering the cheek ; lateral line running along 

 the middle, or nearly the middle, o£ the side o£ the caudal region o£ the 

 body. 

 Mouth inferior, with much - developed lips 

 forming a sort o£ sucker and furnished on 

 the inner side with a sharp cutting-edge 

 covered with a horny sheath ; dorsal fin 



originating w(41 in advance of the ventrals . 1. Laheo, Cuv., p. 300. 

 Mouth inferior ; a more or less developed 

 suctorial disk on the chin, usually bordered 

 by the lower labial fold ; gill-openings 

 restricted to the sides ; dorsal fin origi- 

 nating well in advance of the ventrals . . 2. DiscoanalJius, Heck., p. 343. 

 Mouth interior, without lips, the lower jaw 

 completely exposed and sliowing a sharp 

 cutting-edge covered with a horny sheath ; 

 dorsal fin originating above or a little in 



advance of the ventrals 3. Varicorhinus, Jiiiiti^., -p. ^52. 



Mouth terminal or inferior, with more or less 

 developed lips, with or without a sharp 

 edge ; dorsal fin originating above or a 

 little behind or a little in advance of the 



ventrals 4. Barlus, Cuv.* 



2. Suborbitals large, covering the cheek ; lateral line running along the 

 lower part of the caudal region of the body. 

 Mouth terminal, lower jaw prominent ; dorsal 



fin behind the ventrals 5. Rasbora, Blkr. 



B. Anal with 8 or more branched rays ; mouth terminal. 



1. Suborbitals narrow, not covering the cheek. 

 Dorsal fin above or behind the ventrals ; anal 



with 8 to 14 branched rays 6. Leuciscus, Cuv. 



2. Suborbitals large, covering the cheek. 



a. Anal with 8 or 9 branched rays ; lateral line in the middle of the 

 caudal peduncle. 

 Dorsal fin above the ventrals 7. Leptocypris, Blgr. 



* This and the following genera will be dealt with in the second volume. 



