9S List of the Known Species of 



Cyclas Denaiuvilleirsi Boissy Bull. Soc. Geol. 2 ser. IV. 178, 1846. 

 —Mem. (do.) 2d ser. III. 269, pi. V. f. 4, a-b, 1848. 

 Hob. France (fossil). 



— duhium Hold. Ac. n. s. Phil. Proc. 1, 103, 1841, is Pisid. Virgini- 



cum Bgt. 



14. duplicatiim Pi*. 



Cydas dupUcata. Pf. Syst. Anord. 230, 1821. 

 Sah. Germ. 



— Dupmjanum Norm. Cycl. 5, 1854, is Pisid. Henslowianum Jen. 



15. eqiiilatcrale Pr. Bost. Jl. VI. 366, pi. XII. f. 23-25, 1852. 

 Hob. ]^. Amer. 



16. exaratuin ©kr. Weald. 56, pi. XIII. f. 14-15, 1846. 

 Hcib. Germ, (fossil). 



17. Ferroense Morch Suenson Cat. 43, issT. 

 Hah. Ferroe Islds. 



18. ferrHS^ineum Pr. ,Bost. Proc. IV. 162, I85l.— Bost. Jl. 



VI. 362, pi. XII. f. 8-10, 1852. 

 Hob. ]Sr. Amer. 



— fontinale Pf. Syst. Anord. 125, pi. V. f. 15-16, 1821, is P. pusil- 



lum Jen. 



19. fllSCUHA Parr. Jellebor. Moll. Austr. 22, 1851. 

 Hob. Germ. 



20. Gassie§iaiium Dup. Agen. 207, pi. II. f. ii, 1849. 



Pisidium Normandianum Dup. loc. sup. cit. 206, 1849. 

 " tetragonum Norm. Cycl. 5, 1854. 

 " Baudonianum Ces. Pisid. Cr. 4, 1855. 

 Mob. France. 



— glohulomm Gas. Pisid. 21, pi. II. f. 8, 1855, is P. casertanum Bgt. 



— grande Whit. MSS. 1855, is P. variabile Pr. 



— Grateloiipianum Norm. Cycl. 4, 1854, is P. aranicum Jen. 



21. HenslO'V^'ianuili Jen. Trans. Camb. Phil. Soc. rv. pt. 2 



308, pi. XXI. f. 6-7, 1832. 

 Pera Henslowiana Leach MSS. Brit. Mus. 1819. 

 Cyclas acuta Pf. Syst. Anord. 230, 1821. 

 Tellina Henslowana Shep. Trans. Linn. Soc. XIV. 150, 1823, 

 Cyclas appendiculata Turt. Man. 15, pi. I. f. 6, 1831. 



