50 Oil a new Ciddld Fish. 



VIII. — Descri'ption of a new Cichlid Fish from Portuguese 

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



A SMALL series of fishes obtained by Mr. C. I\I. F. Svvynnerton 

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

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

 and presented by him to the British ^luseuni, consists of 

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

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

 here described. 



Tilapia Swynnertoni. 



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

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

 as the eje, 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 

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

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

 3 or 4 series of scales on the cheek ; 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 j^^ ; lateral 

 lines j^^. 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 II iplochromis 

 Moffati, Casttln. {Chromis philander, M. Weber), but differs 

 in the dentition and in the larger eye. 



IX. — Descriptions of Three new Freshioder Fishes discovered 

 by Mr. G. L. Bates in b'outh 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 3| times. Head a little longer than broad, rugose 



