50 Oil a neio Cichlid Fish. 



VIII. — Description of a new Cichlid Fish from Portuc/uese 

 East Africa. By G. A. Boulenger, F.R.S. 



A SMALL series of fishes obtained by Mr. 0. M. F. Svvynnerton 

 in tlie Idnnda River, a limestone-stream flowing into the lower 

 Buzi River, in Portuguese Gazaland (altitude about 100 feet), 

 and presented by him to the British Museum, consists of 

 examples of Barbus decipiens, Blgr., Tilapia shirana, Blgr., 

 T. melanopleiira, A. Dum., and a new species of Tilapia, 

 here described. 



Tilapia Sxoynnertoni. 



Depth of body 2^ times in total length, length of head 3 

 times. Snout obtuse, with straight or convex profile, as long 

 as the eye, which a little exceeds interorbital width and is 

 contained 3^ times in length of head ; mouth extending to 

 below anterior border of eye or a little beyond ; maxillary 

 exposed at the end ; lips rather thick ; 3 series of tricuspid 

 teeth and an outer series of rather large bicuspid teeth (40 

 to 42 in the upper jaw), the cusps subequal and very obtuse ; 

 3 or 4 series of scales on the clieek ; large scales on the 

 opercle. Gill-rakers short, 8 on lower part of anterior arch. 

 Dorsal XV 9-10 ; spines increasing in length to the last, 

 which measures nearly half length of head ; longest soft rays 

 § length of head. Anal III 8-9 ; third spine shorter than last 

 dorsal. Pectoral barely | length of head, not extending to 

 origin of anal. Ventral reaching origin of anal or a little 

 beyond. Caudal rounded. Scales ctenoid, 29-31 ^^^ ; lateral 

 lines "i^y Dark olive-brown, with ill-defined black cross- 

 bars ; a black vertical bar below the anterior half of the eye 

 and a black opercular spot ; fins grey ; male with two or 

 three round yellow spots on the anal. 



Total length 95 mm. 



Described from three specimens. 



This species bears a great resemblance to H tplochromis 

 Moffati, Oasteln. (^Chromis philander^ M. Weber), but differs 

 in the dentition and in the larger eye. 



IX. — Descriptions of Three new Freshwater Fishes discovered 

 hy Mr. G. L. Bates in tSouth Cameroon. By G. A. 

 Boulenger, F.R.S. 



Synodontis Batesii. 

 Depth of body 3^ to 4^ times in the total length, length of 

 head 3 to 31 times. Head a little longer than broad, rugose 



