10 Rirhardwii Further ('liangcx i,i Crustacean Nomenclature. 



spelling Idoth ea* which may be considered a correction of Idatm 

 in the text. In view of this fact Idothea Fabricius 1799 can be 

 considered the earliest synonym of Idotea Fahricius 1798 and 

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

 Idothea Fabricius 1799, which is then distinct from Idotea Weber 

 1795. 



Ligla Fabricius 1798 must be abandoned as a genus of Isopods, 

 as Miss Rath bun has pointed out. I find that the earliest 

 synonym is one quite similar to the genus of Fabricius and 

 heretofore has been supposed to be a n omen nuditm. Ligi/da 

 is suggested by Rafincsque t in place of the shorter Ligia, and is 

 equivalent in every respect to the genus of Fabricius. The 

 name Ligi/da Rafinesque 1815 may therefore be used for the 

 preoccupied Ligia Weber. 



* Norman, A. M., British Isopoda of the Families yEgidae, Cirolanidse, Idoteidse, and 

 Arcturidae, Ann. Mag. Nat. Hist., ser. 7, XIV, p. 441, 1904. 



t Analyse de la Nature ou Tableau de 1'Univers et des corps organises, p. 101, Palerme. 

 1815. 



