219 
Cryptopterus micropus Giinther, Cat. Brit. Mus. V. 1864, p. 42. 
Kryptopterus cryptopterus Fowler, Proc. Acad. Nat. Sc, Philadelphia (2) LVII. 
1905, p. 468. 
Beao—11; Dy-2; A. -64—70; P. 1. 13—15;-V. 6—7. 
Elongate, compressed, dorsal profile nearly straight. Head 
depressed. Height 4°/,—5'/,, head 5'/,—6'/,. Eye about 3, 
equal to snout, visible from below, its lower half below the 
cleft of the mouth, behind which it is situated, twice in the 
convexity of the interorbital space. Anterior nostrils tubular, 
near the end of the snout, semitubular posterior nostrils at 
some distance behind. Upper jaw prominent. Maxillary barbels 
a little lateral of the anterior nostrils, extending to base of 
pectorals, mandibulary barbels far behind symphysis, about 
as long as pupil. Anal free from caudal but connected by 
membrane with base of the caudal. Ventrals about as long 
as the eye, pectorals extending to anal, much longer than 
head. Pectoral spine strong, somewhat shorter, or longer than 
head. Caudal deeply incised. Maxillary teeth in a narrow 
semicircular band, broadening posteriorly, in each mandible in 
an equal broad band, those on the vomer in a curved band. 
Colour. yellowish with a golden hue, powdered with minute 
black spots, especially on the head and on the pectorals. 
Length about 200 mm. 
Nomen indig.: Lais tungul (Djambi). 
Habitat: Sumatra (Palembang, Djambi!, Banjuasin); Borneo 
(Banjermassin!, Sambas, Sintang, Baram). — Malacca, Siam. 
In fresh water. 
6. Cryptopterus limpok (Blkr.). 
Silurus limpok Bleeker, Nat. Tijdschr. Ned. Indié II. 1852, p. 583. 
Kryptopterus limpok Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 286. — 
Atl. Ichth. II. 1862, p. 87. 
Cryptopterus limpok Giinther, Cat. Brit. Mus. V. 1864, p. 39. 
Cryptopterus limpok Steindachner, Abh, Senckenb. Naturf. Ges, XXV. 1901, p. 444. 
Kryptopiterus limpok Fowler, Proc. Acad. Nat. Sc. Philadelphia (2) LVII. 1905, 
p- 468. 
Cryptopterus limpok Popta, Notes Leyden Mus. XXVII. 1906, p. 24. 
Bett — 12 Die eA 77—88;; Ps 1. 12-14; V7. 
Elongate, dorsal profile very convex, sloping down with a 
concavity to the flattened head and snout. Height 4°/,—5'/s, 
