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THE ZOOLOGIST. 



In Malapterurus electricus, a Nile fish, there are ten soft gill- 

 rakers on its first cerato-hypobranchial arch ; the first four are 

 upstanding, the others lie flat down ; there are besides these and 

 beyond them four rudimentary gill -rakers. There is one up- 

 standing one on the epibranchial. On the other arches there 

 are a few short upstanding gill-rakers on the outer sides only, 

 separated from each other. The upper pharyngeal teeth are in 

 two circular patches of villiform teeth, and the lower ones in 

 two roughly triangular patches. 



STROMATEIDiE. 



In this family we get an example of setiform or bristle-like 

 pharyngeal teeth. 



Fig. II. — Stromateus niger. 



Stromateus niger, the Black Pomfret, Indian Ocean, has 

 twelve horny, short gill-rakers on the cerato-hypobranchial of 

 the first arch, with two on the epibranchial. The seventh and 

 eighth from the angle are the longest, and their length is con- 

 tained about two and a half times in the depth of the gill 

 lamina? just below them. The other arches have a few tubercles 

 on them, distant from each other and small. The upper 



