50 ISOPODA. 



Tribe V. ONISCOIDA. 

 Fam. 1. LIGIID^E. 



LIGIA OCEANICA, Linne. 



Common on rocky shores at and above high-water mark. 



Fam. 2. TRICHONISCID^E. 

 TRICHONISCUS PUSILLUS, Brandt. 



1868. Phikurgria riparia, Bate & West-wood, vol. ii. p. 456. 

 ]897. Trichoniscus pusillus, G. 0. Sars, p. 161, pi. Ixxii. fig. 1. 



Plymouth; Polperro in the gardens of the Inn, not un- 

 common ; Looe, abundantly among sticks by the river-side 

 (Bate) ; St. Ives (A. M. N.}. 



TRICHONISCUS ROSEUS (Koch). 



1868. Phikurgria rosea, Bate & Westwood, vol. ii. p. 460. 

 1897. Trichoni&cus rosens, G. 0. Sars, p. 163, pi. Ixxiii. fig. 1. 



Tolerably abundant in the courtyard and cellar of Mr. Spence 

 Bate's house at Plymouth, and in those of neighbouring- 

 houses. Torquay (A. Af. JV.). 



Fam. 3. N i s c i D M. 



ONISCUS ASELLUS, Linne. 

 Common everywhere. 



PHILOSCIA COUCHII, Khuihan. 



1868. Philoscia Cvuchii, Bate & Westwood, vol. ii. p. 452. 



1885. Philoscia longicornis, Budde-Lund, Crust. Isop. terrestria, 



p. 224. 

 ]897. Philoscia Coitchii, A. Dollfus, "Tableau iconographique des 



Philoscia d'Europe," Feuille des Jeunes Naturalistes, xxvii 6 



Ann^e, p. 5 (separate copy), pi. i. figs. 1-1 c. 



First discovered at Talland Cove, near Polperro (Kinahati). 

 It is now known to have an extended range on the south- 

 west coast of Europe and throughout the shores of the 

 Mediterranean, Azores, and Canaries. 



PHILOSCIA MUSCORUM (Scopoli). 



1897. Philoscia muscorum, A. Pollfu*, "Tab. icon, des Philoscia 

 d'Europe," Feuille des Jeunes Naturalistes, p. 1'2 (separate copy). 



1898. Philoscia muscorum, G. O. Sars, p. 173, pi. Ixxvi. fig. ]. 



Polperro, Cornwall (KinaJtan). 



