404 ON NEW FISHES FROM LAKE TANGANYIKA. 



strongly denticulate ; 8 to 10 strong, subequal serrae above and 

 5 or 6 below opercular notch. Dorsal XV-XVI 8 ; last spine 

 longest, 5 length of head ; longest soft rays ^ length of head. 

 Anal X 7-8. Pectoral | length of head. Ventral reaching or 

 nearly reaching anal. Caudal peduncle very short, nearly as long 

 as eye. Scales rugose, strongly ctenoid, 27 g^^; lateral lines -^. 

 Brown, with small darker spots ; fins dark brown, caudal blackish 

 at the base. 



Total length 70 mm. 



Two specimens from a ditch near the Lukuga River. 



This species is very near A. oianus Gthr., from which it is dis- 

 tinguished by the denticalation of the gill-cover, the different 

 anal fin-formula, aud the shorter ventral fins. 



