broad at its base, its posterior end emarginated and receiving 

 the crescentic, granular basal bone of dorsal spine. The median 

 fontanel does not extend to base of occipital process. Eye 

 3 4 3 / 4 . Maxillary and mandibulary barbels equal to eye, the 

 mental ones shorter. Height of dorsal equal to head. Dorsal spine 

 serrated on both sides and about of the length of the head. Base 

 of adipose fin equal to that of soft dorsal, about thrice in its 

 distance from that fin. Height of anal much less than that of 

 dorsal. Pectoral spine denticulated at both edges, shorter than 

 head. Caudal bifurcate, the upper lobe the longer. Darkish 

 above, whitish silvery below, all over with a metallic hue. 

 Fins yellowish. Length 240 mm. 



Nomen in dig. : Keteng (Madura). 



Habitat: Java (Surabaya); Madura; Sumatra (Palembang); 

 Borneo (rivers Barito and Mahakam !). Pinang, Siam, 



Andamans. 



In rivers and in brackish water near the shore. 



3. Tetranesodon M. Weber. 



(MAX WEBER, Nova Guinea IX. livr. 4. 1913, p. 545). 



Head conical, snout conical, strongly prominent before small, 

 transverse inferior mouth, the lips of which are internally 

 swollen. Nostrils close together, lateral, the posterior with a 

 valve. A pair of short maxillary, mandibulary and mental 

 barbels. Headshields rugose, covered with thin skin. Occipital 

 process touching the basal bone of dorsal spine. Eye of 

 medium size, lateral, with free orbital margin. Dorsal with 7 

 rays and a pungent spine, originating in the middle between 

 pectorals and ventrals. Adipose fin moderate, above anal. 

 Ventrals six-rayed. Pectorals with a pungent spine. Caudal 

 forked. Axillary pore present. On each side in the jaws a 

 narrow patch of conical teeth, few in number. Palate edentulous. 

 Gillmembranes united, in their middle connected with the 

 isthmus, with a free posterior margin. Ventral branch of first 

 branchial arch with few (8) gillrakers. 6 branchiostegal rays. 



i. Tetranesodon conorhynchus M. Web. 



Tetranesodon conorhynchus Max Weber, Nova Guinea IX. livr. 4. 1913, p. 546. 



B. 6; D. I. 7; A. 17; P. I. 10; V. 6. 



Elongate. Height below dorsal spine somewhat more than 6; 



