100 



Distribution: The single species only known from 

 Sumatra and Borneo. 



Fig. 42. Pharyngeal teeth of 

 Rohteichthys microlepis (Blkr.) X 2 - 



43- Head of Rohteichthys microhpis 

 (Blkr.) X iV-2- (/lower jaw; ^preorbital; 

 rf rostral fold; uj upper jaw. 



i. Rohteichthys microlepis (Blkr.) 



Barbus microlepis Bleeker, Nat. Tijdschr. Ned. Indie I. 1850, p. 12. 



Systomus microlepis Bleeker, Nat. Tijdschr. Ned. Indie II. 1851, p. 60. 



Rohtee microlepis Bleeker, Act. Soc. Sc. Indo-neerl. VIII. 1860, Enum. Spec. 



pise. Arch. Ind. p. 53. 

 Rohteichthys microlepis Bleeker, Ichth. Arch. Ind. Prodr. II. Cyprini, 1860, p. 396. 



Atl. Ichth. III. 1863, p. 115. 

 Rohteichthys microlepis Giinther, Cat. Brit. Mus. VII. 1868, p. 191. 



D. 3.8; A. 3.5(6); P. 1.16; V.2.9; L.I. 68 72; L. tr. T. 



16 



Profile of back strongly elevated and curved, sharply dis- 

 tinguished from the almost horizontally situated concave profile 

 of the head. Height 2.6 2.7; 3.4 3.6 in length with caudal. Head 

 3.2 3.4, 4 4.4 in length with caudal. Eye about 4.4, about 

 i 2 / 5 in snout, which is about equal to interorbital space. Jaws 

 strongly ascending, the lower one prominent. Lips rather 

 thick, partly covered by the praeorbital. Maxillary nearly 

 reaching vertical through frontborder of eye. Origin of dorsal 

 about in the middle of a line connecting frontborder of eye 

 and base of caudal, somewhat more or less than half length 

 of head behind origin of ventrals. Dorsal deeply concave, its 

 base in a scaly sheath. The height of its third spine, the ossi- 

 fied part of which is broad and the hindborder of which is 

 strongly serrated, is shorter than the head. Anal deeply con- 

 cave, its third spine equal to head without snout. Ventrals 



