239 
ones; mental barbels much shorter. First dorsal triangular, its 
hindborder straight, its soft rays gradually decreasing in size, 
17/,—1'/, times in length of head, its origin much nearer to 
base of pectorals than to base of ventrals. Its spine cartila- 
ginous and flexible in its upper portion, a little shorter than 
longest rays, hindborder of its osseous part finely denticulated. 
Anal with rays of equal length, their height a little less than 
half length of head, forming with the caudal and caudodorsal 
a round outline, the lastnamed with anteriorly gradually 
decreasing rays, which finally disappear in a very short fat 
pad, reaching to about above the end of the first '/, of the 
anal. Ventrals rounded, reaching to anal, half as long as head. 
Pectorals triangular, their longest anterior ray reaching to base 
of ventrals or a little farther, '/, shorter than head. Pectoral 
spine as long as first soft ray, its greater distal part is carti- 
laginous and flexible, hindborder of its osseous part denticu- 
lated. Upper surface of head and anterior part of body with 
closely set, hairlike filaments extending farther backwards in 
older specimens, more distant on head, especially in young. 
Lateral line very conspicuous. Maxillary teeth very few in 
number, in two small, oval patches, conical or cylindrical with 
rounded tops. Similar teeth, also very few in number, form 
a small, round patch on each mandible. The few rounded 
vomerine teeth arranged in a semilunar patch. Horizontal 
branch of the first branchial arch with 23 gillrakers, its mem- 
brane low, the free border of which is crenulated, especially 
anteriorly. Light brown with darker markings, in older speci- 
mens greyish by the velvety covering of hairlike papillae. 
Paired fins, caudal, belly, underside of head, top of snout and 
barbels whitish. Length 415 mm. 
Habitat: Dutch South New Guinea. (Lorentz river!). 
Note: In a full grown ripe female (415 mm. long), the 
pectorals are shorter (*/, shorter than head), the ventrals also 
(conspicuously less than half head), and the nasal barbel nearly 
I eye diameter distant from eye. 
3. Copidoglanis meraukensis M. Web. 
Copidoglanis meraukensis Max Weber, Nova-Guinea IX. livr. IV, 1913, p. 529. 
Pie) Wa Ae citer SOP. 1. ro; V. 11—12. 
Height a little more than length of head, about 57/,. Dorsal 
profile sloping down from first dorsal, a little convex behind head, 
