1902.] ICHTHYOLOGY OF THE CONGO. 271 



opercular spot ; dorsal and caudal fins with small dark spots ; 

 a fine blackish edge to the caudal above and beneath. 



Total length 102 miUim. 



Five specimens. 



Allied to T.fasciata Perugia. 



Appendix. 



In a series of specimens from other parts of the Congo State, 

 belonging also to the Brussels Museum, the representative 

 of a new species of a marine Olupeid genus was found, which I 

 have great pleasure in naming after my friend and colleague 

 M. L. Dollo. 



Pristigaster dolloi, sp. n. (Plate XXX. fig. 3.) 



Closely allied to P. cay anus Cuv., but abdominal profile much 

 less convex. Depth of body 3 times in total length, length of 

 head 4 times. Eye longer than the snout, shorter than the post- 

 ocular part of the head ; maxillary extending to below the centre 

 of the eye. Gill-rakers long, 25 on lower part of anterior arch. 

 Dorsal 15, equally distant from the end of the snout and the root 

 of the caudal. Anal 46, originating below the middle of the 

 dorsal. Pectoral nearly as long as the head. Caudal deeply 

 forked. Caudal peduncle as long as deep. About 40 scales in a 

 longitudinal series. Ventral serration formed of 32 spinose scutes. 

 Uniform silvery. 



Total length 120 millim. 



A single specimen from Banana. 



EXPLANATION OP THE PLATES. 



Plate XXVIII. 



Fig. 1. Micralestes stormsi, male, p. 265. 

 2. „ „ female. 



5. Phractura lindica, p. 268. 



3 a. „ „ Upper view of head and anterior part of body, X 2. 



3 6. „ „ Lower view of head, X 3. 



Plate XXIX. 



Fig. 1. Auchenoglanis pmictattts, p. 267. 



1 a, „ „ Open mouth, X 2. 



2. „ pulcher, p. 267. 



2 a. „ „ Open mouth, X 2. 



3. Amphilius brevis, p. 268. 



Plate XXX. 



Fig. 1. Fseudoplesiops squamiceps, p. 270. 



2. Tilapia stormsi, p. 270. 



2 a. „ „ Open mouth, X 2. 



3. Pristigaster dolloi, p. 271. 



