Pacific Coast of North America. 335 



84. Ligia exotica, Roux. 



Ligia exotica, Roux, Crust. M(5dit. p. 3, pi. xiii. fig. 9. 



Ligia grandis, Perty, Spix, H. Martins, p. 212, pi. xl. fig. 13. 



Ligia Gaudichauclii, Milne-Edwards, Hist. Nat. des Crast, iii. p. 157. 



Ligia Baudi7iiana, Milne-Edwards, Hist. Nat. des Crust, iii. p. 155. 



Ligia (Italica) coriacea, Koch, Deutschl. Crust, p. 36 ; Berichtig. p. 211. 



Ligia Gaudicliaudii, Dana, Expl. Exp. p. 741, pi. xlix. figs. 6 a~h ; 



Nicolet, Gay, Hist. Chile, iii. p. 265. 

 Ligia Baudiniana, Miers, Proc. Zool. Soc. 1877, p. 670. 

 Ligia exotica, Budde-Lund, Crust. Isop. Terrestria, 1885, pp. 266-268. 



Hah. Widely distributed ; California ; Topolobampo, 

 Mexico {Mr. Edward Palmer) . 



35. LiGiDlUM, Brandt. 

 Analytical Key to the Species o/"Ligidiura. 



a. Inner process of the basal article of the 

 uropoda three times shorter than tlie 

 terminal external branch ; internal ter- 

 minal branch reaching the apex of the 

 external branch ; the two terminal hairs 

 equal in length to the external branch. . 85. L. hypnorum (Cuvier). 



«'. Inner process of tlie basal article of the 

 uropoda four times shorter than the 

 terminal external branch ; internal ter- 

 minal branch long, extending much 

 beyond the apex of the external branch, 

 being a sixth part longer ; the two ter- 

 minal hairs short, equal in length to half 

 the external branch 86. i. tenue, Budde-Lund. 



85. Ligidium hypnorum (Cuvier). 



Oniscus hypnorum, Cuvier, Journ. d'Hist. nat. ii. p. 19, pi. xxvi. 

 Ligidium hypiorutn, Budde-Lund, Naturhistorisk Tidsskrift, 3rd ser. 



vii. 1870, p. 225 ; Stuxberg, CEfversigt af Vetensk.-Akad. Furhaudl. 



1875, no. 2, p. 48. 



Hab. California {Stuxberg). 



86. Ligidium tenue, Budde-Lund. 

 Ligidium tenue, Budde-Lund, Crust, Isop. Terrestria, 1885, p. 258. 

 Hah. Sitka Island. 



36. Styloniscus, Dana. 

 87. Styloniscus gracilis j Dana. 



Styloniscus gracilis, Dana, Proc. Acad. Nat. Sci. Philad. vii. 1854-55, 

 p 176; Stimpson, Journ. Bust. Soc Nat. Hist. vi. 1857, p. G6; 

 Budde-Lund, Crust. Isop. Terrestria, 1885, p. 271. 



Hah. California. 



