Stebbing Mdmaia and Mamaiidse. 159 



a subgenus of Pisa, but this subgenus was never described, simply 

 because investigation showed that there was no such subgenus. 

 It was not the name only that was dropped, but the thing. 

 That which de Haan eventually described was a subgenus, not 

 of Pisa, but of Maja. It must be considered fortunate that he 

 did not choose to name it Paramaya, for, had he done so, we 

 should have been saddled with a generic name and several 

 others consequent upon it all signifying a relationship to Maja, 

 when carcinology no longer possessed a Maja to which they 

 could be either nearly or distantly related. Under these circum 

 stances I trust that Mamaia and Mamaiidse will be allowed to 

 stand. 



