205 



separated. Gillrakers 12 (those of 5. borneensis unknown), 

 closely set, a little shorter than branchial filaments. Branchioste- 

 gals 9 ii. Gillmembranes free from each other and from 

 isthmus. 



Fig. 80. Silurodes eugcneiatus (Vaill.). 



Synopsis of the species. 



I. Anal 76 82 S. hypophthalmus p. 205. 



II. Anal 53 59. 



A. Anal connected with caudal, mandibulary barbels 



5 1 /:* in length S. borneensis p. 206. 



B. Anal free from caudal, mandibulary barbels sur- 

 passing caudal S. eiigeneiatus p. 207. 



i. Silurodes hypophthalmus (Blkr.). 



Silnrus hypophthalmus Bleeker, Verh. Bat. Gen. XXI. I. 1847, p. 15. 

 Silurus macronema Bleeker, Nat. Tijdschr. Ned. Indie II. 1851, p. 203. 

 Silurodes hypophthalmus Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858, 



p. 272. Atl Ichth. II. 1862, p. 83. 

 Silurodes macronema Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 273. 



Atl. Ichth. II. 1862, p. 83. 



Callichrous hypophthalmus Gunther, Cat. Brit. Mus. V. 1864, p. 48. 

 Callichrous macronema Gunther, Cat. Brit. Mus. V. 1864, p. 49. 



B. ii; D. 34; A. 7682; P. I. 1214; V. 78. 



Height 4 ! / 2 to about 5, head 5 ! / 5 6, eye 4 5, visible from 

 below, situated behind the corner of the mouth, about 3 ! / 2 

 times in the convexity of the interorbital space. Lower jaw 

 more or less prominent. Upper profile with elevated neck, 

 concave on the head. Maxillary barbels extending to about 

 the middle of the anal, by exception even farther, mandi- 

 bulary barbels shorter than the head. Height of very short 

 dorsal equals about the length of head without snout. Anal 



