25 



ximate, the anterior tubulate; before suborbital spine. Dorsal 

 opposite to ventrals, its origin before them. Anal short, far 



Fig. 8. Acanthopsis choirorhynchus (Blkr.) X 9 /iO- 



behind dorsal, caudal emarginate. Gillopening a vertical slit 

 ending before base of pectorals. 



Fig. 9. Ventral surface of head of Acanthopsis choirorhynchus (Blkr.) 



a. rostral barbel, b. anterior barbel of upper jaw. //. lower lip with fringes, and 



at the corner of the month the posterior maxillary barbel. Much enlarged. 



Distribution: Fresh water of indo-australian Archipelago 

 (Sumatra, Java, Borneo) and south-eastern Asia. 



i. Acanthopsis choirorhynchus (Blkr). 



Acanthopsis dialyzona van Hasselt, Alg. Konst- en Letterbode 1823, II, p. 133 



(no description). 

 Acanthopsis biaculeata Riippell, Samml. des Senckenb. Mus. 1852, p. 28. ') 



l) This name is given by RUPPELL without description with Kuhl as author. 

 Probably it came from the Leyden Museum, which got the species, now under 

 consideration, from KUHL & VAN HASSELT under this name, which has never 

 been published. (Vide Bleeker Atl. Ichth. III. 1863, p. 9). 



