15. SCHILBE. 49 



10. Callichrous macronema. 



Silurus macronema, Bleek. Nat. Tydsehr. Nederl. Ind. ii. p. 203. 

 Silurodes macronema, Bleek, Prodr. Silur. p. 273, and All. Ichth. Silur. 

 p. 83. tab. 88. fig. 1. 



D. 4. A. 79. P. 1/15. V. 8. 



The height of the body is contained five times in the total length 

 (without caudal), the length of the head five times and a third ; lower 

 jaw strongly prominent ; vomerine teeth in a narrow, uninterrupted 

 band. The maxillary barbels extend nearly to the caudal, those of 

 the mandibles are shorter than the head. Pectorals as long as the 

 head, with the spine slender and scarcely denticulated. The anal is 

 not united with the caudal. 



Bandjermassing. 



a. Type of the species. From Dr. P. v. Bleeker's Collection. 



15. SCHILBE. 



Schilbe, sp., Cuv. Regne Anim. 

 Schilbe, Bleek. Prodr. Silur. p. 255. 



One short dorsal fin with a pungent spine^; no adipose fin ; the anal 

 terminates close to the caudal, which is forked. Barbels eight : one 

 to each maxillary, one to each posterior nostril, and two to each 

 mandible, the latter being placed one behind the other. The pala- 

 tine teeth are present, and form together with those of the vomer a 

 horseshoe-like band. Nostrils remote from each other, the posterior 

 wider than the anterior. Head covered with skin. Neck elevated, 

 the upper profile of the head being concave ; eye behind, and partly 

 below the cleft of the mouth. Ventral composed of six or seven rays. 



Tropical Africa. 



1. Schilbe uranoscopus. 



Schilbe uranoscopus, Riippell, Fortsetz. Beschreib. Nil-Jisehe, p.4.taf. 1. 



fig.l. 

 isidori, Cuv. 8f Val. xiv. p. 375. pi. 412. 



D. 1/6. A. 67-71. P. 1/11. V. 6. Vert. ^di. 



The height of the body is two-ninths of the total length (without 

 caudal), the length of the head one-fifth ; the greatest width of the 

 head is three-fifths of its length. The lower jaw is the longer ; the 

 depth of the cleft of the mouth is one-half of its width. Nasal and 

 maxillary barbels of nearly equal length, shorter than the posterior 

 of the lower jaw, which are about one-third as long as the head. The 

 diameter of the eye is one-fifth or one-sixth of the length of the head. 

 The end of the dorsal fin is situated vertically above the root of the 

 ventral, and the width of its base equals that of the latter ; its height 

 is less than the length of the head, the length of its spine being two- 

 thirds of the latter ; spine finely serrated posteriorly. The anal fin 

 terminates at a short distance from the caudal, which is deeply forked, 

 with pointed lobes. The pectoral spine is stronger than that of the 

 dorsal fin, and terminates at, or close by, the root of the ventral ; it 



vol. v. 



