10 Rlcliard-fOii — Finihrr Chdvges in Crnstarntu Xomcnrlature. 



spelling Ithithra* which may be considered a correction of Idntea 

 in the text. In view of this fact Llothni Fabriciiis 179!) can l)e 

 considered the earliest synonym of Idotca Fahrieius 179<S and 

 the genus can be retained as an isopod genus witli the spelling 

 Llothca Fabricius 1799, which is then distinct from Idotea Weber 

 1795. 



Ligia Fabricius 1798 must'be abandoned as a genus of Isopods, 

 as Miss Rathbun has pointed out. I find that the (arliest 

 synonym is one quite similar to the genus of Fabricius and 

 heretofore has been supposed to be a no men mid inn. Li(/i,'da 

 is suggested by Rafinesque t in place of the shorter Lin'id, and is 

 equivalent in every respect t(j the genus of Fabricius. The 

 name Ligi/da Rafinesque ISl.i may therefore be used for the 

 preoccupied Ligia W'cbcr. 



* Norman, A. M., British Isopoda of the Families .'Egidre, Cirolanidw, Idoteidre, and 

 Arcturidte, Ann. Mag. Nat. Hist., ser. 7, XIV, p. 441, 1004. 



t Analyse de la Nature ou Tableau de I'Universot des corps organisos, p. 101, Palerme. 

 1815. 



