239 



ones; mental barbels much shorter. First dorsal triangular, its 

 hindborder straight, its soft rays gradually decreasing in size, 

 i 2 / 5 1'/ 2 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 ! /o f tne 

 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, 1 J 5 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 ( 2 / 5 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. 



B. 8; D. I. 4; A. circa 8<D; P. I. IO; V. II 12. 

 Height a little more than length of head, about 5 2 / 5 . Dorsal 

 profile sloping down from first dorsal, a little convex behind head, 



