VIII 



opinion that no great value ought to be attached to them, as 

 the unavoidable series of difficulties is still enlarged by the 

 fact, that the authorities for those names have mostly been 

 European ichthyologists and no linguists." 



Finally there remains for us the pleasing duty of expressing 

 our sincere thanks to Mr. J. F. OBBES, to whom we are indebted 

 for most of the figures, which illustrate this volume and to 

 Mr. C. PELTENBURG, head of the firme E. J. BRILL Ltd of 

 Leiden for his interest in publishing this volume. 



Eerbeek MAX WEBER. 



Amersfoort' ^ * ' L. F. DE BEAUFORT. 



