32 THE ZOOLOGIST. 



distinct prolongation but not marked by any constriction of the 

 sacculus. The " sulcus acousticus " not very well denned. 



SPARIDiE. 



Chrysophrys berda, from the Indian Ocean. A piece of thin 

 bone on the basi-occiput, but not standing out from it, shows the 

 site of the sacculi ; neither is the bone thin enough to be trans- 

 parent. The sagitta is much curved, also much embedded in 

 bone. A distinct lagena marked, by a constriction, from the 

 forward part of the sacculus. 



MlJLLIDiE. 



Mullus barbatus (the " Red Mullet "). Illustrated fig. V., 9. 



Caproid^:. 

 Capros aper (the "Boar Fish"). Illustrated fig. V., 4. 



OSPHROMENID^E. 



Osphromenus hepturus, a fish from Java. The same remarks 



apply as in the case of 0. olfax described in the ' Zoologist,' 



April, 1914, p. 139. 



Cichlid^;. 



Tilapia hendcloti, from the Mabole river, Sierra Leone 

 district, West Africa. The location of the sacculi shown by two 

 prominent excrescences, one on each side of the basi-occiput. The 

 pocket enclosing the sacculus is open at the top but required 

 cutting away at the two ends. The lagena end especially 

 required releasing. The lagena shows as a distinct prolongation 

 marked by a slight constriction where it takes off from the 

 sacculus. 



Hemichromis bimaculatus. This specimen came from the 



Mabole river ; it is also found in the Nile. The sites of the 



sacculi shown by two prominences of thin bone, one on each 



side of the basi-occiput. The sagittae are large for the size 



of the fish. 



Pleuronectidje. 



Psetta loevis (the Brill). Illustrated fig. V., 1. 



HipjJoglossoides limandoides (the Long Bough Dab). The 

 position of the sacculi shown by two small bulbs on the basi- 

 occiput, the sagittae are rather inclined to be large for the size of 

 the fish ; they show the rings of half-yearly growth very 

 distinctly when they are first got out of the head (fig. V., 8). 



