350 



Height about twice, 2.6 in length with caudal. Head pointed, 

 rostro-frontal line somewhat concave, about thrice in length, 

 3.8 in length with caudal. Eye about thrice in head. For 

 other details see genus. Preserved specimens brownish with 

 variable silvery crossbands. Usually the first from occiput to 

 base of ventrals; the second from spinous dorsal to spinous 

 anal, the third crossing caudal peduncle to soft anal; it may 

 be followed by an incomplete one. Sometimes a white stripe 

 runs from snout through eye and a vertical one through hind- 

 part of eye. Anal with a black border, soft dorsal and caudal 

 with or without blackish spots. Ventrals black. Length 50 mm. 



Habitat: Sumatra (Bagan api api !, River Batang Hari, 

 Djambi !, Taluk!, Gunung Sahilan !). — Malay Peninsula (Kuala 

 Lumpur, Negri Sembelan), "Indien" (Canestrini). 



In rivers and brooks. 



9. Ctenops McClelland. 



(McClelland, Journ. Nat. Hist. Calcutta V. 1844, p. 281). 

 Tiichopsis Canestrini, Verhandl. zool.-bot. Gesellsch. Wien X. i860, p. 708. 



Compressed, oblongly-elongate. Mouth somewhat protractile, 

 its cleft oblique. Intermaxillaries reaching orbit or are far distant 

 from it; lips moderate. Lower jaw prominent. In the jaws a 

 band of small, fixed conical teeth, the outer series of which 



is larger; none on vomer 

 and palatines. Praeorbital 

 serrated. Scales ciliate, 

 large, regularly arranged. 

 Lateral line a more or 

 less interrupted series of 

 small pores, occasionally 

 more tubular towards the 

 Fig. 91. Cteiipps vittatits (C. V.). n.s. caudal region. Dorsal 



short, originating behind 

 commencement of soft anal, with 2 — 7 spines and 6—8 branched 

 rays. Anal scaly at the base, beginning below pectorals, with 

 4 — 8 spines and 24 — -28 rays. Caudal rounded or pointed. 

 Pectorals rounded. The ventrals inserted somewhat in advance 

 of them, with a rather strong spine and five rays, the first of 

 which is produced into a long, simple, articulated filament. 

 Opercular bones entire, only the horizontal limb of praeoper- 

 culum serrated. 



