Pisidium, with their Synonymy. 95 



2. Adamsi Pr, Stimp. Moll. N. E. 16, 1851.— Pr. Bost. Jl. VI. 



352, pi. XL f. 1-3, 1852. 

 Cyclas nitida Migh. (non llanl ) Bost. Proc. 1, 48, 1841. — Bost. 

 Jl. IV. 39, pi. IV. f. 3, 1841.— loc. sup. cit. IV. 319, 1843.— 

 Linsl. Amer. Jl. 48, 2*76, 1845.— Pr. Bost. Proc. IV. 165, 

 1851.— Bgt. Amen. 1, p. 8, 1853. 



— cequale Rafin. Pr. Bost. Jl. VI. 36Y, 1852, is P. Virginicum Bgt. 



— altile Antk. Pr. Bost. Jl. VI. 353, pi. XL f. 10-12, 1852, is P. com- 



pressum Pr. 



3. amnictllU Jen. Trans. Camb. Phil. See. IV. pt. 2, 309, pi. 



XIX. f. 2, 1832. 

 Tellina amnica Mtiller 2, 205, 1774. 

 « striata Schrot. 193, 1779. 



" rivalis Mat. & Eack. Trans. Linn. Soc. 3, 44, pi. XIII. f. 

 37-38, 1797. 

 Cyclas palustris Drap. tabl. 106, 1801. 

 Cardium amnicum Mat. 86, lS03. 

 Cyclas ohliqua Lara. V. 559, 1818. 



Pisidium ohliquum Pf. Syst. Anord. 124, pi. V. f. 19-20, 1821. 

 Cyclas amnica Turt. Conch. 250, pi. II. f. 15, 1822. 

 Pera fiuviatilis Leach in Jen. Trans. Camb. Phil. Soc. IV. pt. 2, 

 310, 1832. 

 " Henslowiana Leach in Jen. loc. sup. cit. 310, 1832. 

 Pisid. infiatum Meg. Porro 121, pi. II. f. 13, 1838. 

 Cyclas Pfeifferi Meg. loc. sup. cit. 121, 1838. 

 Pisid. palustre Nils. loc. sup. cit. 122, 1838. 

 " Pfeifferi Ziegl. Villa Lomb. 10, 1844. 

 Cordula amnica Leach Brit. Moll. 292, 3 852. 

 Pisid. Grateloupianum Norm. Cycl. 4, 1854. 

 " intermedium Gas. Pisid. 11, pi. I. f. 4, 1855. 

 " sulcatum Parr. MSS. 

 Hah. Europe. 

 — amplum Inyalls MSS. 1855, is P. abditum Hald. 



4. antiquum Braiui. 



Sah. Germ, (fossil). 



