277 



Fig. 107. Arius crosso- 



like extremities. When young the occipital process is strongly 

 carinated and narrow. The median fontanel begins on the 

 snout, ends before the occipital process and is broadest in 

 the middle. Dorsal profile sloping down in a straight line to 

 the somewhat conical, rounded, slightly prominent snout. Eyes 

 with a free orbital margin, 5 6, situated 

 about in the middle of the head, in young 

 less than twice, in full grown specimens 

 more than twice in the snout, nearly 3 

 times in the interorbital space. The maxillary 

 barbels extend on pectorals in young, in 

 old specimens not quite to base of pectorals ; 

 mandibulary ones to hindborder of gillmem- 

 branes, mental ones not so far. Height of dorsal 

 more than 2 / 3 of head ; dorsal spine nearly equal 

 to head without snout, its frontborder granu- 

 lar and serrated at the top as also the whole 

 hindborder. Adipose fin small, its base much 

 less than that of soft dorsal, 5 to more cheilus . Blkr ' Te f t h / 



upper jaw and palate '/i. 



than 6 times in its distance from dorsal. 

 Anal concave. Ventrals distant from origin of anal, much 

 shorter than pectorals, the length of which is equal to head 

 without snout; pectoral spine flattened, serrated at both sides, 

 stronger than and as long as the dorsal one. Sharp villiform 

 teeth in the jaws in an arcuate band; those on the palate 

 globular, in 4 separate patches : two small ones widely separate 

 anteriorly, 2 large pearshaped ones posteriorly, their long axis 

 converging behind. About 9 stiff, somewhat flattened gillrakers, 

 much shorter than branchial filaments. Bluish brown above, 

 silvery white below, fins yellowish with more or less distinct 

 dusky margins. Length 375 mm. 



Nomen indig. : Ikan manjong utik (Malay. Batav.). 



Habitat: Java (Batavia); Sumatra (Padang, Trussan); Bin- 

 tang; Banka; Celebes (Bay of Boni!). Philippines. 



In sea. 



2. Arius macrocephalus Blkr. 



Arius macrocephalus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846, 



p. 167, ibid. p. 287. 

 Ariodes macrocephalus Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858, p. 85. - 



Atl. Ichth. II. 1862, p. 39. 

 Arius macrocephalus Gunther, Cat. Brit. Mus. V. 1864, p. 165. 



