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PREFAC E. 



The present volume, which succeeds Volume I. after a comparatively 

 short interval, contains the completion of the account of the Suborder 

 Ostariophysi. 



Of the Families belonging to this Suborder, the Characinidse are 

 described in Volume I., which also includes three genera of Cyprinidit. 

 The present volume thus contains the greater part of the Cyprinicbe and 

 the whole of the SiluridiB. 



Much of the material on which the Catalogue is based has been 

 presented to the Museum. The lists given under the respective species 

 contain some record of the way in which the specimens have been 

 acquired, and imply an acknowledgment of the fact that the preparation 

 of the Catalogue has been largely facilitated by public and private 



generosity. 



13eiti.su Museum (Natural History), 



London. 



December, 1910. 



SIDNEY F. HARMER, 



Keeper of Zoology. 



