SYNODONTIS. 



4oo 



granulate, without keel, extending as far back as occipito-nuchal process. 

 Dorsal I 7 ; spine as long as head, slightly curved, striated, smooth in 

 front (except towards the end), serrated behind. Adipose dorsal 4 to 4\ 

 times as long as deep, 1^ times as long as its distance from rayed dorsal. 

 Anal IV 8, rounded. Pectoral spine shorter than dorsal, not reaching 



Fiff. 325. 



Synodontis macrostirjma. 



3 



4- 



Type. ; 



ventral, rather strongly serrated on outer border, very strongly on inner. 

 Caudal deeply forked. Caudal peduncle as long as deep. Brown above, 

 lio-hter beneath ; back and sides with lavge round or oval blackish spots ; 

 head and fins with smaller spots. 



Total length lfiO millim. 



Lake Ngami district, Bechuanaland. 

 1-2. Types. Okovango R. R- B. Woosnam, Esq. (C). 



27. SYNODONTIS OBESUS. 

 Synodontis serratus (non Rtipp.), Giinth. Ann. & Mag. N. H. (6) xvii. 1896, 



p. 277. 

 Synodontis obesus, Bouleng. op. cit. (7) ii. 1898, p. 415. 

 Synodontis robbianus (non Smith), Giinth. Proc. Zool. Soc. 1902, ii. p. 337. 

 VOL. II. 2 F 



