Canon A. M. Norman on British Isopoda. 444 



instituted Lis genus. Stebbing supplied Zenohiana (Ann. 

 & Mag. Nat. Hist. ser. 6, vol. xv. 1895, p. 24*). 



Zenohiana prismatica (Risso) . 



1826. Zenohia prismatica, Risso, Hist. Nat. de I'Europe M^rid. vol. v. 



p. 110, pi. V. lig. 24. 

 ? Idotea chelipes, 0. G. Costa, Fauna del regno di Napoli, Iclotea, 



p. 2, pi. xi. fig. 2 a, h, c. 

 1867. Idotea parallela, Bate & Westwood, /. c. vol. ii. p. 391. 

 1895. Idotea 2}>'ismatica, Dollfus, I. c. p. 9, fig. 25. 



I have procured tliis species at Falmouth and have received 

 it from Paignton (Rev. T. R. R. Stehhing)^ Jersey [Sinel), 

 and the Adriatic {Prof. Claus). 



Genus 3. Stenosoma, Leach. 



1. Stenosoma lancifei'um, Leach (MSS.). 



1867. Idotea appendiculata, Bate & Westwood (nee Risso), /. c. vol. ii. 



p. 396. 

 1895. Stenosoma lanci/er, Dollfus, I. c. p. 5, fig. 13. 



Tide-marks, Exmouth (A. M. N.) ; Polperro, Cornwall 

 {Laughrin) j Ilfracombe {Rev. T.R. R. Stehbing) : all in Mus. 

 Nor. 



2. Stenosoma acuminatum, Leach. 



1837. Idotea acuminata, Bate & Westvfood, I. e. vol. ii. p. 394. 

 1895. Stenosoma acuminatum, Dollfus, I. c. p. 5, fig. 14. 



I have never seen this species. It is not Idotea capita j 

 Rathke, which Bate and Westwood give as a synonym. 

 Stenosoma capito I have from the Adriatic {Prof. Ileller). 



Fara. Arcturidse. 

 Genus 1. Akcturus, Latreille. 



\_Arcturus hafjini (Sabine). 



1824. Idotea hafjini, Sabine, Appendix Parry's Voyage, vol. iv. p. 50, 



pi. i. figs. 4, 5, 6. 

 1840. Arcturus haffini, H. M.-Edwards, Xat. Hist. Crust, vol. iii, 



p. 123, pi. xxxi. tig. 1. 

 1836-49. Arctunis haffini, H. M. -Edwards, Regne Animal d'apres 



Organ. Cuvier, Cruhtaces, pi. Ixx. fig. 2. 

 1876. Arcturus haffini, AVyville Thomson, The Depths of the Sea, 



p. 127. 

 1885. Arcturus haffini, G. 0. Sars, I. c. p. 97, pi. ix. figs. 1-21. 



fair 



* The genus occurs in the middle of a paragraph, which is scarcely 

 ir to recorders. It is not therefore noticed in ' Zool. Record.' 



