232 



Mr. G. R. Crotch's CJtronolo(jical 



KiKBY (Trans. Linn. Soc. xii.) creates no less than 

 twenty-four genera^ figuring all the typical species, with 

 details. 



Leach (Samouelle's Comp.) describes a few genera, and 

 indicates a large number of others. 



