1904.] 



OSTEOLOGY OF CLUPEOIB FISHES. 



469 



racteristic features of that of Glupea. The posterior temporal 

 groove faces more laterally than in Cliqyea owing to the width of 

 the cranium in the squamosal region being proportionately less. 

 The temporal foramen near the anterior end of the groove is a 



Cranium of Dussumieria acuta. — A, dorsal view ; B, left side : C, back view. 

 s, point of attachment of the spicular bone to the pvo-otic. For explanation 

 of other lettering see p. 493. 



narrow horizontal slit, but the pre-epiotic fossa is large. This 

 fossa is bounded above by the parietal, below by the squamosal, in 

 front by the parietal and squamosal, and behind by the epiotic. 

 It is about half as deep as wide, and the inner wall is mainly 



