950 



ZOOLOGY MOLLUSOA. 



Collected as follows: 



FAM. PISIDIIDAE. 



Genus PI&IDIUM, Pfeiffer. 

 PISIDIUM ABDITUM, Halcl. 



Pisidium abditum, HALD., Proc. Acad. Nat. Sci. Pliila., i, 1841, 53. PRIME, Mou. Am. 



Corb., 1SG5, CS. ROBERTS, U. S. Geol. Surv. Terr., 1870, 469. 

 Cyclas minor, 0. B. ADAMS, Proc. Bost. Soc. Nat. Hist , i, 1841, 48. 

 Pisidium tenellum, GOULD, Agassiz's Lake Sup., 1848, 245. 

 Pisidium obscurum, PRIME, Proc. Bost. Soc. Nat. Hist., iv, 1851, Id. 

 Pisidium rubellum, PRIME, loc, sub cit, iv, 1851, 103. 

 Pisidium minus, STIMPSON, Moll. New England, 1851, 16. 

 Pinidium kio-tzi, PRIME, Proc. Bost. Soc. Nat. Hist., iv, 1851, 102. 

 Pisidium zonatum, PRIME, loc. nub cit., iv, 1851, 162. 

 Pisidium regulare, PRIME, Bost. Jour, vi, 1852, 303, pi. xii, figs. 11, 12. 

 Pisidium notatum, PRIME, loc. sub cit., vi, 1852, 365, pi. xii, tigs. 20-22. 

 Pisidium arcuatum, PRIME, loc. sub cit., vi, 1852, 304, pi. xii, figs. 14-16. 

 Pisum abditum, DESHAYES, Brit. Mus. Cat., 1854, 282. 

 Pisum minus, DESHAYES, loc. sub cit., 1854, 281. 

 Pisidium resartum, INGALLS, in litt, 1855. 

 Pisidium rubrum, LEWIS, in lift., 1855. 

 Pisidium plenum, LEWIS, in litt., 1855. 

 Mmculium abditum, ADAMS, Bee. Gen., ii, 1858, 451. 

 Musculium minus, ADAMS, Joe. sub cit., ii, 1858, 451. 

 Musculium rubellum, ADAMS, loc. sub cit., ii, 1858, 452. 

 Musculium obscurum, ADAMS, loc. sub cit, ii, 1858, 452. 

 MuscuUum kurtzi, ADAMS, loc. sub cit., ii, 1858, 451. 

 Musculium zoiuitum, ADAMS, loc. sub cit., ii, 1858, 452. 

 Pixum obscurum, ADAMS, loc. sub cit., ii, 1858, 060. 

 Pisum kurtzi, ADAMS, loc. sub cit, ii, 1858, 660. 

 Pisum rubcllum, ADAMS, loc. sub cit, ii, 1858, 600. 

 Pisum zonatum, ADAMS, loc. sub cit, ii, 1858, 000. 

 Pisidium retusiim, PRIME, Proc. Zool.. xxviii, 1860, 322. 



HAB. North America : in New England ; in the States of New York, 

 New Jersey, Pennsylvania, Ohio, Michigan, South Carolina, and California; 

 Wyoming Territory, Utah Territory; in the Lake Superior region ; at Mon- 

 treal in Canada; and in Honduras. 



