325 
point of the snout runs between the posterior and anterior 
nostril. A thin skin covers the headshields, which have reticu- 
late rugae. Occipital process keeled, its sideborders slightly 
converging, its length about 1'/, the breadth of its base, 
posteriorly rounded and touching the narrow crescentic basal 
bone of the dorsal spine. The long, narrow, elliptic median 
fontanel reaches to the occipital process. Humeral process 
triangular, pointed, with a longitudinal crest. Eyes 5'/,, lateral, 
with conspicuous free orbital margin, situated in the anterior 
half of the head, about 2 times in snout and about 2'/, times 
in the convex interorbital space. Maxillary barbels reach half 
way on the pectorals or somewhat farther, mandibulary barbels 
half as long, the mental ones still shorter, reaching to the 
gillmembrane. Dorsal originating nearer to the pectorals than 
to the ventrals, equal to length of head from posterior nostril; 
dorsal spine flattened, both its borders weakly serrated, some- 
what longer than head without snout. Base of adipose fin 
shorter than that of dorsal, thrice in its distance from last- 
named (less in young specimens). Height of anal somewhat 
more than postorbital part of head, its inferior border concave. 
Ventrals equal to postorbital part of head, they don’t reach the 
anal. Pectorals equal to head without snout, their spine some- 
what shorter, equal to dorsal spine or slightly shorter, flattened, 
frontborder weakly, serrated hindborder strongly so. Caudal 
deeply forked, the pointed lobes 3 times longer than the median 
rays. Least height of caudal peduncle at least two times in its 
length. No axillary pore. Villiform teeth in upperjaw in a curved 
band, 8 times broader than long. The two slightly separated 
bands in the lower jaw are somewhat narrower. Eight stiff 
flattened gillrakers considerably shorter than branchial filaments. 
Colour dorsally grey brown, sides silvery, lower surface of 
head and belly white. Fins, especially their distal part, darkish. 
Length 175 mm. 
Habitat: South New Guinea (Lorentz-river !). 
3. Hemipimelodus velutinus M. Web. [Fig. 141, p. 323]. 
Hemipimelodus velutinus Max Weber, Nova Guinea V. Zool. livr. 2, 1908, 
p- 225. — Ibid. IX, livr. 4, 1913, p. 549. 
Pa Oo Rie eee. I ro; V. 6. 
Elongate; height 5'/,, head 3'/,, broader than high, its 
q 
