171 



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



1857. 

 Mmculium 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 amplum, Ingalls in litt. 1855. 

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



Moll, ii, 451, 1858. 

 Pisum Nov.-Eboracense, H. and A. Adams, Loc. 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. 



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



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



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



20, 21, 1821. 



Cyclas gibba, Alder, Trans. N. H. Soc. Korthumb. 1, 41, 1830. 

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



pi. xx, f. 13, 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. 



