171 



Pisidium nitidum. Jenyns, Baudon, Pisid. Fr. 23, pi. i, f. A. 



1857. 

 Musculium nitidum, H. and A. Adams, Gen. Rec. Moll, ii, 



451, 1858. 

 Pisidium nitidum, Jenyns, Prime, Cat. Corb. 17, 1863. 



Europe. 



27. P. Nov.-Eboracense, Prime, Ann. Lye. N. H. N. Y. 



vi, 66, pi. i, f. 3, 1853. 

 Pisidium amplujn, Ingalls in litt. 1855. 

 Musculium Nov.-Eboracense, H. and A. Adams, Gen. Rec. 



Moll, ii, 451, 1858. 

 Pisum Nov.-Eboracense, H. and A. Adams, Log. sup. cit. ii, 



660, 1858. 

 Pisidium Nov.-Eboracense, Prime, Cat. Corb. 14,1863. Smith. 



Inst. Misc. Coll., Prime Monog. Corb. 67, f. 71. 1865. 



U. S. of America. 



28. P. Nov.-Zelandicum, Prime, Cat. Corb. 17, 1863. Ann. 



Lye. N. H. N. Y. viii, 91, f. 39, 1864. 



New Zealand. 



29. P. obtusale, C. Pfeiffer. 



Cyclas obtusalis, Lamarck, An. v, 559, 1818. 



Peru gibba, Leach, in litt. in Mus. Brit. 1820. 



Cyclas ininiina, Studer, Meissner. Anzeig. iii, 83, 1820. 



Pisidium obtusale, C. Pfeiffer, System. Anord. 125, pi. v, f. 



20, 21, 1821. 

 ajclas gibba, Alder, Trans. N. H. Soc. Northumb. 1, 41, 1830. 

 Pisidium obtusale, Jenyns, Trans. Phil. Soc. Cambr. iv, 301, 



pi. XX, f. 1—3, 1832. 

 Cyclas ovalis, Nilsson, Trans. Phil. Soc. Cambr. iv, 1832. 

 Pisidium mininum, Studer, Nouv. Mem. Soc. Helv. Sc. Nat. 



1, 25, 1837. 

 Pisidium ovale, Petit, J. Conchyl. ii, 421, 1851. 

 Pisum obtusale, Deshayes, Brit. Mus. Cat. Conchif. 279, 1854. 

 Pisidium obtusale, C. Pfeiffer, Baudon, Pizid. Fr. 18, pi. i, f. 



E, 1857. 

 Musculium obtusale, H. & A. Adams, Gen. Rec. Moll, ii, 452, 



1858. 

 Pisidium obtusale, C. Pfeiffer, Prime, Cat. Corb. 17, 1863. 



Europe. 



30. P. OCCidentale, Newcomb. Proc. Ac. N. S. Calif, ii, 94, 

 1863. Smith. Inst. Misc. Coll., Prime Monog. Corb. 73, 

 1865. San Francisco, California. 



31. P. parvulum, Benson in litt. 



Prime, Cat. Corb. 17, 1863. India. 



