1548 



CRUSTACEA. 



The preceding table affords the following lists of genera of the three 

 grand divisions, according to the present state of the science. 



1. GENERA EXCLUSIVELY AMERICAN OR OCCIDENTAL. 





Coast on 





Coast on 





which found. 





which found. 



1. Maioidea. 





3. Grapsoidea. 





Microrhynchus, 



west. 



Cyrtograpsus, . 



east. 



Salacia, 



u 



Uca, 



west and east 



Libidoclea, 



. west and east. 



Grecarcoidea, . 



east. 



Libinia, 



a tt 



Fabia, 



west. 



Pelia, . 



west. 



Pinnixa, 



. west and east 



Rhodia, 



tt 



Pinnotherelia, 



west. 



Pisoides, 



it 



Halicarcinus, 



. west and east. 



Thoe, 



west and east. 



4. Leucosoidea. 





Chorilia, 



west. 



Platymera, 



west. 



Scyra, 



tt 



Hepatus, . . 



west and east 



Othonia, 



ti 



Guaia, 



ti a 



Mithraculus, 



west and east. 



5. Corystoidea. 





Tyche, 



tt tt 



Telmessus, 



west. 



Eurypodius, 



u ti 



Peltarion, 



east. 



Oregonia, 



west. 



Pseud ocorystes, . 



west. 



Inachoides, 



tt 



6. Anomoura. 





Pugettia, 



a 



Corystoides, 



west. 



Epialtus, . 



west and east. 



Bellia, 



tt 



Leucippa, 



a tt 



Ranilia, . 



it 



2. Cancroidea. 





Albunhippa, . 



west. 



Pilumnoides, . 



west. 



Echidnocerus, 



u 



Trichodactylus, 



east. 



7. Macroura. 





Arenseus, 



tt 



Cambarus, 



west and east. 



Potamia, 



west and east. 



Paracrangon, . 



west. 



Orthostoma, . 



east. 



JEglea, . 



tt 



Acanthocyclus, 



west. 



Cryphiops, 



tt 



2. GENERA EXCLUSIVELY OP THE AFRICO-EUROPEAN DIVISION. 



1. Maioidea. 



Lissa. 



Stenorhynchus. 

 Amathia. 

 Eurynome. 



2. Cancroidea. 



Perimela. 



Portumnus. 



Polybius. 



3. Grapsoidea. 



Gonoplax. 

 Heterograpsus. 

 Brachynotus. 

 Hymenosoma. 



4. Leucosoidea. 



Ilia. 



5. Corystoidea. 



Thia, 



