﻿39 



upper jaw. Dorsal opposite to ventrals or just behind the vertical 

 through the origin of the latter. Anal short, far behind ventrals. 



/_, 1 ig. 19. Ni.mai.hilus fasciatus (C. V.) X 2. 



'} 



^^^1 Caudal emarginate or entire. Scales minute, wanting on head. 



/ 



Gillopenings subvertical, ending near base of pectorals. 



Distribution: Europe, Asia, a single species in Africa. 



Key to the ind o-a ustralian species. 



1. Ventrals surpassing anus; outer pectoral rays pro- 

 longed, much longer than head N. longipecioralis p. 39. 



2. Ventrals not reaching anus; pectorals shorter than 



head. Caudal deeply emarginate N. fascial us p. 40. 



3. Ventrals reaching anus ; pectorals shorter than head ; 



caudal feebly notched N. olivaccus p. 41. 



Doubtful species N. notost'ignia p. 42. 



I. Nemachilus longipectoralis Popta. 



Ncmachihis longipectoralis Popta, Notes Leyden Mus. XXV. 1905, p. 182. — 

 ibid. XXVII. 1906, p. 198. 



D. 3.9; A. 3.6; P. 2.10; V. 1.7. 



Height 6 — 6.6, 7.8 — 8.8 in length with caudal. Head 4 — 4.2, 

 5.3 — 5.5 in length with caudal. Eye about 4, one third 

 shorter than snout, slightly less than interorbital space. Inner 

 rostral barbels reaching to about middle of eye, outer ones 

 to middle of operculum, those at corner of mouth somewhat 

 shorter. Origin of dorsal nearer to end of snout than to caudal, 

 before origin of ventrals. Dorsal oblique, its height about equal 

 to head. Anal oblique, its height less than that of the dorsal 

 and equal to that of the ventrals, its origin nearer to caudal 

 than to origin of ventrals. Ventrals shorter than head, surpassing 

 anus, their origin is opposite to the second branched ray of 

 the dorsal. The two outer articulated rays of pectorals prolonged, 

 surpassing base of ventrals, much longer than head. Caudal 

 deeply emarginate, lobes pointed with rounded tips, the upper 



