217 
2. Cryptopterus macrocephalus (Blkr.). 
Kryptopterichthys macrocephalus Bleeker, Ichth. Arch. Ind. Prodr, I. Siluri, 1858, 
p- 293. — Atl. Ichth. II. 1862, p. 89. 
Cryptopterus macrocephalus Giinther, Cat. Brit. Mus. V. 1864, p. 41. 
Cryptopterus bicirrhis Popta, Notes Leyden Mus, XXVII. 1906, p. 26 (not of C.V.). 
Ba.o—1o; Di 12> A. 525 P. 1. ros) V. 6. 
Elongate. Dorsal profile convex, slightly sloping down to 
the snout. Height 4'/,—4?/,, head 5—5'/,. Eye 3—3'/,, nearly 
equal to snout, situated behind cleft of mouth, only a small 
part of the eye below the level of the cleft of the mouth, 
their distance across the convexity of the interorbital space 
about twice their diameter. Maxillary barbels extending to 
the end of the first anterior third of the anal. Mandibulary 
barbels nearly as long as eye. Dorsal just in front of ventrals. 
Anal free from caudal but connected with it by a membrane. 
Length of ventrals 2'/, times in that of pectorals, which are 
about equal to length of head. The osseous part of pectoral spine 
about as long as head without snout. Caudal deeply incised. 
Teeth in the jaws in a narrow crescentic band. Vomerine 
teeth in a small patch, which is longer than broad. Colour 
brownish marmorated, dorsal surface darkest. Fins light brow- 
nish, Anal with a median longitudinal dark line. Length 
about 110 mm. 
Habitat: Sumatra (Padang?, Djambi!); Borneo (Mahakam). 
In fresh water. 
3. Cryptopterus bicirrhis (C. V.). 
Silurus bicirrhis Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, p. 367. 
Silurus palembangensis Bleeker, Nat. Tijdschr. Ned. Indié, III. 1852, p. 584. 
Kryptopterichthys palembangensis Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 
1858. p. 290. — Atl. Ichth. II. 1862, p. 88. 
Kryptopterichthys bicirris Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858, p. 292. 
Atl. Ichth. Il. 1862, p. 89. 
Cryptopterus amboinensis Giinther, Cat. Brit. Mus. V. 1864, p. 40. 
Cryptopterus palembangensis Giinther, Cat. Brit. Mus. V. 1864, p. 40. 
Cryptopterus bicirrhis Gunther, Cat. Brit. Mus. V. 1864, p. 41. 
Crypltopterus bicirris Vinciguerra, Ann, Mus. Civ. Genova XVI. 1880, p. 168. 
Kryptopterus palembangensis Fowler, Proc. Acad. Nat. Se. Phil. (2), LVIII. 
1905, p. 468. 
B. 8—9g; D. 1; A. 53—70; P. 1. 11—12; V. 6—7. 
Elongate. Dorsal profile more or less convex, sloping down 
