3;i 



r. Fam. C\trinodontidae. 



Elongate, more or less strongly compressed. Head depressed, 

 flattened above as well as anterior part of back. Scales rather 

 large. Head scaly, at least above. Mouth small or moderate, 

 protractile or not. Maxillaries slender, not coalesced with inter- 

 maxillaries. Pointed or conical teeth in the jaws and some- 

 times on the vomer. Mesopterygoid wanting. Pectorals inserted 

 high up or not. Ventrals with 6 — 7 rays. Caudal acuminate, 

 rounded, truncate, emarginate or forked. Second, third and 

 fourth upper pharyngeals dentigerous '). Gillmembranes free or 

 more or less connected, free from isthmus, Branchiostegals 4 — 6. 



Generally small fishes, living in sea near the shore and in 

 brackish or freshwater of southern parts of North America, in 

 South America, Southern Europe, Africa and Southern Asia. 



Key to the indo-australian genera of 

 Cyprinodontidae. 



1. Mouth small, upper jaw not protractile. No teeth on vomer. 

 Gillmembranes broadly united. Pectorals situated high up. Aplocheilits p. 371. 



2. Mouth moderate, with a distinct bent downv/ards near 

 corner of mouth. Upper jaw protractile. Teeth on vomer. 

 Gillmembranes free from each other. Pectorals low, situated 



below middle of height Panchax p. 374. 



I. Aplocheilus McClelland. 



(Mc Clellan'd, Ind. Cyprin. As. Res. XIX. 1839, p. 426.) 

 Haplochilns auctt. p. p., Oryzias Jordan & Snyder. 



Elongate, compressed. Head and anterior part of back flat- 



^^^^^^^^^^^ 



Fig. 95. Aplochfihis cclcbcnsis M. Web. n.s. 5 

 the left figure shows the head from above: / intermaxillare. 



tened above. Mouth small, horizontal. Upper jaw not protrac- 



i) According to Tatk Regan, Ann. Mag. Nat. Hist. (8) VII. 191 1, p. 321. 



