2/8 



B. 6; D. I. 7; A. 2021; P. I. II; V. 6. 



Elongate, height 5, head 3 or a little less, much broader 

 than high, its width is 3 / 5 of its length. Occipital process 

 carinated, longer than broad, somewhat triangular, its lateral 

 margins nearly straight, about twice longer than broad in its 

 middle, its hindmargin broad, touching the narrow crescentic 

 basal bone of the dorsal, both irregularly granulated, a few 

 granulations also on the occipital bone. Median fontanel be- 

 ginning behind snout and ending before the occipital process, 

 broadest in the middle. Dorsal profile sloping down very 

 slightly to the bluntly rounded, prominent snout, with a very 

 feeble convexity. Eyes with a free orbital margin, 6'/ 2 7> 

 situated slightly before the middle of the head, 2 2 / 3 in snout, 

 3 times in the convex interorbital space. Maxillary barbels 

 nearly reach the hindborder of the head, mandibulary barbels 

 extending to gillmembrane, mental ones not so far. Height of 

 dorsal equal to head without postorbital part, its spine i 1 /^ 1 3 / 5 

 in head, granulated in front, weakly serrated behind. Adipose 

 fin very small, its base much less than that of the dorsal and 

 about 4 ! / 2 times in its distance from that fin. Ventrals do not 

 reach anal and are much shorter than pectorals, the length 

 of which is nearly equal to the head without snout, their 

 flattened spine somewhat shorter, its frontborder corrugated, 

 denticulated distally, as is also its hindborder. 10 short, stout 

 gillrakers. Villiform teeth in an arcuate band in the jaws, 

 granular teeth far backward on the palate in two oval patches, 

 the long axis of which converge hindward. Two small patches 

 in front on the palate, reduced to a few small teeth or even 

 wanting. Brownish above, silvery white below. Fins hyaline, 

 adipose fin with a black spot. Length 401 mm. [One of 

 Bleeker's specimens examined in the Leyden Museum]. 



Nomen in dig. : Manjong utik (Malay. Batav.). 



Habitat: Java (Batavia, Penandjung Bay!). 



In sea. 



3. Arius argyropleuron C. V. 



Arius argyropleuron Cuvier & Valenciennes, Hist. Nat. Poiss. XV. 1840, p. 104. 

 Arius acutus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846, p. 167. 

 Arius Hamiltonis Bleeker, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846^.291. 

 Arius argyropleuron Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858, p. 86. 

 Ariodes argyropleuron Bleeker, All. Ichth. II. 1864, p. 40. 

 Arius argyropleuron Giinther, Cat. Brit. Mus. V. 1864, p. 164. 



