329 



** 



anterior third of it '), 4 times in the convex interorbital space. 

 Dorsal fin much higher than the body, its height about 3 times 

 its base, some of the rays are prolonged in filaments, its strong 

 spine is equal to the head or a little shorter, it is serrated at the 

 front and hindborder. The base of the adipose fin is shorter than 

 the dorsal, its length being less than ! / a its distance from the 

 dorsal. Anal emarginate, longer than high and about twice the 

 length of the adipose fin. Pectorals i'/ 3 in the length of the 

 head, their spine 5 / 7 of that of the dorsal, serrated at both 

 borders but stronger at the posterior border. Ventrals shorter 

 than pectorals. Caudal forked, its upper lobe the longer. 

 Teeth small, pointed, in several rows on the jaws, they form 

 a slightly curved band in the maxillary, which is 4 times 

 broader than long. Length about 150 mm. [After Vinciguerra, 

 not seen by us). 



Nomen in dig. : Ikan Attit. 



Habitat: Borneo (Sarawak). 



6. Osteogeneiosus Bleeker. 



(BLEEKER, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846, p. 173). 



Elongate, head strongly depressed, covered by smooth skin. 

 Upper jaw projecting before the arcuate mouth, with thin lips. 

 Nostrils close together, the posterior with a valve, situated 

 superiorly near the frontborder of the snout. Eyes lateral, 

 with a free orbital margin. Only one pair of barbels, belonging 

 to the maxillaries and very stiff and bony. Short dorsal with 

 7 rays and a pungent spine, situated between pectorals and 

 ventrals. Adipose fin short, opposite to short anal. Pectorals 

 with a pungent spine. Ventrals 6-rayed. Caudal forked, with 

 rounded lobes. Villiform bands of teeth in the jaws, on the 

 palate two separate patches of obtusely conical teeth. Gill- 

 membranes united, their free hindborder deeply emarginate, 

 only anteriorly connected with the isthmus. Branchiostegals 5. 



i. Osteogeneiosus militaris (L.). 



Silurus militaris Linne, Systema Naturae, edit. X. 1758, p. 305. 

 Arius militaris Cuvier & Valenciennes, Hist. Nat. Poissons, XV. 1840, p. 114. 

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

 1846, p. 173. 



i) u Situati nel terzo anteriore del muso" (? !). 



