172 Some Changes in Crustacean Nomenclature. 



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

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

 iKirius Herbst, which is the megalopa stage of an undetermined 

 crab. Ligia therefore may l)e 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: Alpheida^ to Cran- 

 gontda', Crangonida' to Cragonida", Corystida^ to Euryalidic. 



