172 Some Changes in Crustacean Nomenclature. 



7. Ligia Weber has three species, inflexa, 3 cuspitata, and 

 granaria; the first two are nomina nuda, the last is Cancer gra 

 in trias Herbst, which is the megalopa stage of an undetermined 

 crab. Ligia therefore may be considered a synonym of Cancer; 

 and the name can not be used for an Isopod. 



In consequence of changes in genera, the following names of 

 families of Decapoda must also be changed: Alpheidse to Cran- 

 gonidse, Crangonidse to Cragonidse, Corystida? to Euryalida?. 



