174 



l\Iessrs. E. Lonnberg and II. Rendalil on 



total number amounls to about 25. Maxillary barbel mar- 

 j>ined and somewhat creiiulaled, ^ the length of the head. 

 Mandibular barbels branehed, the outer | length of head, the 

 inner |. Gill-opening not extending beyond the root of the 



Fig-. 4. 





Synodontis ovidiug, a little more tliau g nat. size. 

 Fig. 5. 



Lower side of head of Synodontis ovidius, nat. size. 



pectoral. Occipital nuchal sliield rugose and granular, 

 longer than broad, with rather pointed posterior processes. 

 Humeral process coarsely granular, about twice as long as 

 broad, bluntly pointed, but with convex upper and lower 



