472 



SILUEID.E. 



nuchal process. Dorsal I 7 ; spine feebly curved, hot serrated, as long 

 as head, with a very long filamentous prolongation. Adipose dorsal 

 2| times as long as deep, originating immediately behind rayed dorsal. 

 Anal IV 8, pointed. Pectoral spine as long as head, not quite reaching 

 ventral, feebly serrated on outer edge, strongly on inner. Ventral 

 pointed, reaching origin of anal. Caudal deeply forked, upper lobe 

 much produced. Caudal peduncle a little deeper than long. Pale 

 greyish brown above and on the sides, black beneath ; fins grey ; barbels 

 whitish. 



Fig. 353. 



Synodontis resupinalus. 

 Type (P. Z. S. 1904). | 



Total length 260 millim. 

 Upper Niger. 

 1. Type. Lokoja 



J. S. Budgett, Esq. (P.). 



56. SYNODONTIS BATENSODA. 

 Synodontis membranaceus, part., I. Geoff r. Deser. Egypte, Poiss. p. 297 (1827) ; 



Cuv. & Val. Hist. Poiss. xv. p. 258 (1840) ; Steind. Sitzb. Ak. Wien, lxi. i! 



1870, p. 536. 

 Synodontis batensoda, Riipp. Fortsetz. Beschr. n. Fische Nil, p. 6, pi. iii. fig. 2 



(1832) ; Bouleng. Ann. & Mag. N. H. (7) viii. 1901, p. 12, and Fish. Nile, 



p. 380, pi. lxxiv. (1907). 

 Brdchytynodontis batensoda, Bleek. Nat. Tijdschr. Dierk. i. 18(53, p. 55. 



