4G ISOPODA. 



Tribe III. VALVIFERA, G. 0. Sars. 



Fani. 1. I DOT BID JE. 



In this family reference will be made to Dollfus (A.), 

 " Les Idoteidte des Cotes de France," Feuille des Jeunes 

 Naturalistes, Feb. 1895 : and in this and the next family, 

 Arcturidae, to Norman (A. M.), " British Isopoda of the 

 Families ^E^idse, Cirolanida?, Idoteidse, and Arcturidae," 

 Ann. & Mag. Nat. Hist. ser. 7, vol. xiv. 1904. 



IDOTEA BALTHICA (Pallas). 



Synonyms are : /. tricuspidata, Bate & Westwood, and 

 /. irrorata, Say. 



Abundant on the coasts. 



IDOTEA NEGLECTA, G. 0. Sars. 



1895. Iclotea marina, A. Dollfus, 1. c, p. 7, fig. 22. 



1897. Idothea negkcia, G. O. Sars, 1. c. p. 84, pi. xxxv. fig. 1. 



1904. Idotea neylecta, Norman, 1. c. p. 442. 



No doubt all along the coasts. Falmouth and Plymouth 

 (A. M. N.}. In the latter locality sometimes found in the 

 greatest profusion. 



IDOTEA PELAGICA, Leach. 



1895. Idotea pelagica, A. Dollfus, 1. c. p. 8, fig. 23. 

 1897. Idothea pelagica, Cl. O. Sars, 1. c. p. 81, pi. xxxiii. 



Spence Bate states that he had received this species from 

 the Eddystone Lighthouse. 



IDOTEA EMARGINATA (Fabricius). 



1867. Idotea emarginatn, A. Dollfus, 1. c. p. 6, figs. 17, 18. 

 1897. Idothea emarginata, G. O. Sars, 1. c. p. 85, pi. xxxv. fig. 2. 



Falmouth (Cocks)', Plymouth, at times very abundant (A 

 M. N.). 



IDOTEA LINEARIS (Pennant). 



1846. M>th?a sexlineata, Krb'yer, Naturhist. Tidssk. ser. 2, vol. ii. 



p. 88 ; Voyages en Scand. &c. pi. xxvi. fig. 1. 

 1867. Idotea linear is, Bate & Westwood, vol. ii. p. 388. 

 1895. Idolea linearis, A. Dollfus, 1. c. p. 6, tig. 16. 



Exmonth, Plymouth, Falmouth (.4. M. JV.) ; Torquay 

 (Bate). 



