54 SILTTRIDJE. 



4. Eutropius adansonii. 

 Bagrus adansonii, Cuv. §• Vol. xiv. p. 391. pi. 414. 



A. 53. Dorsal and anal spines rather feeble. {Vol.) 

 Senegal. 



5. Eutropius (?) murius. 



The Mini Vaeha. 



Pimelodus murius, Ham. Buch. Fish. Gang. pp. 195, 378. 



D. 1/8. A. 42. P. 1/11. V. 6. 



Vomerine and palatine teeth ? Barbels not longer than the head ; 

 upper jaw a little longer than the lower ; eyes large ; dorsal spine 

 nearly smooth. Silvery, caudal fin blackish. (H. B.) 



Four inches long. Mahananda River. 



6. Eutropius depressirostris. 



Bagrus depressirostris, Peters, 3Ionatsber. Acad. Wiss. Berlin, 1852, 

 p. 682. 



B. 10. D. 1/6. A. 56-60. P. 1/10-11. 



The lower jaw is not shorter than the upper when the mouth is 

 closed ; the hinder mandibulary barbels equal in length to those of 

 the maxillaries. The dorsal fin is situated entirely before the ven- 

 tral ; its spine is slender and serrated posteriorly. 



Mozambique. 



a. Adult. Presented by Prof. Peters. 



17. HEMISILURUS. 



Ilemisilurus, sp., Bleeker, Pruclr. Silur. p. 295. 



Dorsal fin none ; the anal fin terminates close to the caudal, which 

 is deeply forked. Two small barbels on the upper jaw. Palatine 

 teeth none ; vomerine teeth in two separate patches. Head covered 

 witli skin ; neck elevated, the upper profile of the head being concave. 

 Eye lateral, its lower margin being on the same level with the cleft 

 of the mouth. The upper jaw is the longer. Head compressed, snout 

 not broader than deep. The mandible with large mucous cavities (as 

 in a Sciaenoid). > Ventrals composed of eight or nine rays. 



East Indian Archipelago. 



1. Hennsnurus heterorhynchus. 



Wallago heterorhynchus, Bleek. Nat. Tydschr. Nederl. Ltd. v. p. 514. 

 Ilemisilurus heterorhynchus, Bleek. Prodr. Silnr. p. 296, and Ail. Ichth. 

 Silur. p. 94. tab. 93. fig. 2. 



B. 12-13. A. 90-93. P. 1/16-17. V. 9. 

 The height of the body is contained four times and three-fifths 

 to five times in the total length (without caudal), the length of the 

 head nearly six times ; the diameter of the eye is one-fourth or one- 

 fifth of the length of the head. The barbels are fleshy, flexible, 



