14. CALLICIIROTTS. 45 



14. CALLICHROUS f. 



Silurus, subgenus Callichrous sp., Ham. Buck. Fish. Gang. p. 149. 



Silurodes et Pseudosilurus, Bleek. Prodr. Silur. p. 255. 



Silurodes et Callichrous, Bleek. Nederl. Tydschr. Dierk. 1863, p. 115. 



One very short dorsal fin, without pungent spine ; no adipose fin ; 

 the anal terminates close by the caudal, or is continuous with it ; 

 caudal forked. Barbels four: one to each maxillary and one to 

 each mandible, the latter being placed a£ some distance behind the 

 symphysis. The lower jaw is the longer. Palatine teeth none. 

 Nostrils remote from each other, subequal in form and width. Head 

 covered with skin ; eye behind, and partly below the cleft of the 

 mouth. Ventral composed of eight or less rays. 



East Indies. 



The species may be divided into two groups : — 



* The vomerine band of teeth interrupted in the middle : Callichrous, 

 Blkr., p. 45. 



* * The vomerine teeth in an uninterrupted band : Silurodes, Blkr., p. 48. 



* The vomerine band of teeth interrupted in the middle. 

 1. Callichrous bimaculatus. 



Witvisch, Nieuhof, Zee- en Lant-reize, p. 276. 



? Silurus bimaculatus, Bl. viii. p. 24.taf. 364; Bl Schn. p. 37 1 ; M'Clell. 



Calc. Joum. Nat. Hist. iv. p. 401. 

 Ompok siluroides, Lacep. v. p. 50, vi. tab. 1. fig. 2 (very bad). 

 Silurus bimaculatus, Cuv. fy Vol. xiv. p. 360. 

 Pseudosilurus bimaculatus, Bleek. Prodr. Silur. p. 277. 

 Phalacronotus siluroides, Bleek. Prodr. Silur. p. 304. 

 Callichrous bimaculatus, Bleek. Atl. Iehth. Silur. p. 84. tab. 87. fig. 3 \. 



D. 4. A. 57-66. P. 1/12-14. V. 7-8. 



The anal fin terminates close to the caudal, but is separate from 

 it ; the pectoral is rather shorter than the head ; its spine is as long- 

 as the head behind the eye, and denticulated towards its extremity. 

 The height of the body is somewhat more than the length of the head, 

 which is contained four times and a half to four times and two-thirds 

 in the total length (without caudal) ; the diameter of the eye is one- 

 fifth or one-seventh of the length of the head. Lower jaw strongly 

 prominent ; the vomerine teeth are in two very narrow transverse 

 bands, separated by an interspace ; the maxillary barbels extend to, 

 or nearly to, the origin of the anal fin. A blackish blotch above the 

 pectoral, remote from the head. 



Java, Sumatra, and Borneo. 



a. Fine specimen. From Dr. P. v. Bleeker's Collection. 



t 1. Pseudosilurus macrophthalmus, Blyth, Joum. As. Soc. Beng. xxix, p. 156. 



— Tenasserim. 

 \ In this figure the'angle of the mouth is distorted and too much depressed ; 

 naturally, it is never below the eye. 



