﻿1 68 



pores. No lateral lobe. Anterior border of snout pendulous, entire, 

 forming a rostral fold. Mouth moderate, semicircular, protractile ; 

 lips continuous, entire, the upper one rather thick, the lower one 

 rather thin, mesially connected with ^ 



the isthmus so that the postlabial c ^,~.>y^^^\^.^.z/.l 



groove is restricted to the lateral ^^- "/^^^A^m I \ 



parts of the lower lip; it is distinc- ^-^ '■'/.,, \\\W//" \ 

 tly separated from the lower jaw, //, i \^U//l ^'Y'^ 



which is covered by a horny sub- // / J^fj ^— \ 



stance, forming a sharp edge'). A / /- l--^..^.i>. 



pair of rostral and maxillary barbels. / 



Eye with a free orbital rim. Dorsal Fig. 69. Snout of LissochUus 



with,. 9 branched rays, its last un- sumatratms n. sp. a. rostral, b. 



divided ray osseous and entire, origi- "^axillary barbel; c horny covering 



, r .1 ^-A 11 , of lower jaw: //. lower lip; n. 



natmg betore*, ventrais. Anal short ., ^ \i , • , • 



° '^ nostril; pg. postlabial groove, in- 



with 5 branched rays. Scales large, terrupted in the middle ;;/. rostral 

 longitudinally striated. Lateral line fold; ui. upper lip. 

 running in the middle of the tail. 



.Sensory tubes undivided. No sensory folds on head. Gillmem- 

 branes united with the isthmus. Gillrakers very short, few in 

 number. Pharyngeal teeth in 3 series, uncinate, 5.3.2 — 2.3.5. 



Distribution: Mountain streams of Sumatra, Malacca, 

 the Southern Shan States and the Himalaya range. 



Key to the species. 



L. 1. 26 — 29 L. ditkiii p. 168. 



L. 1. 24 — 25 L. suiiiatranus p. 169. 



I. Lissochilus dukai (Day). 



Barbus Dukai Day, Fishes of India 4O. 1878 — 1888, p. 564. 



Barbus soroides Duncker, Mitt. a. d. Naturhist. Museum Hamburg XXI. 1904, p. 178. 



D. 3.9; A. 8; p. 1. 14; V. 1.8; L. 1.26— 29; L. tr. i. 



4l 



Height 3.4 — 3.6, about 4.5 in length with caudal. Head 

 about 4, less than 5 in length with caudal. Eye 3'/.^ to about 

 4, about I'/j times in snout, which is shorter than the inter- 

 orbital space. Snout somewhat prominent, barbels longer than eye. 

 Even in young specimens the prae- and suborbital are crowded 

 with tubercles on pores. Origin of dorsal opposite to 7th scale 



l) This horny covering is not visible in formol specimens 



