1)50 



ZOOLOGY— MOLLUSOA. 



Collected as follows: — 



No, 



Locality. 



Date. 



Collector. 



19 

 23 





Sept., 1873 

 do 



J. Wolf. 

 Do. 









Fam. pisidiidae. 



Genus PISIDIUM, Pfeiffer. 



PISIDIUM ABDITOM, Haiti. 



Pisidium abditum, Hald., Proc. Acad. Nat. Sci. Phila., i, 1841, 53.— Prime, Mou. Am. 



Corb., 1865, 08.— 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, 101. 

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

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

 Pisidium Jcurtzi, Prime, Proc. Bost. Soc. Nat. Hist., iv, 1851, 102. 

 Pisidium zonatum, Prime, loc. sub cit., iv, 1851, 102. 

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

 Pisidium notatum, Prime, loc. sub cit, vi, 1852, 305, pi. xii, tigs. 20-22. 

 Pisidium arcuatum, Prime, loc. sub cit., vi, 1852, 304, pi. xii, figs. 14-10. 

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

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

 Pisidium resartum, Ingalls, in lift., 1855. 

 Pisidium rubrum, Lewis, in Utt., 1855. 

 Pisidium plenum, Lewis, in lift., 1855. 

 Musculium abditum, Adams, Bee. Gen., ii, 1858, 451. 

 Musculium minus, Adams, loc. sub cit, ii, 1858, 451. 

 Musculium rubellum, Adams, loc. sub cit, ii, 1S58, 452. 

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

 Musculium Jcurtzi, Adams, loc. sub cit, ii, 1858, 451. 

 Musculium zonatum, Adams, loc. sub cit, ii, 1858, 452. 

 J'isum obscurum, Adams, loc. sub cit., ii, 1858, 000. 

 Pisum Jcurtzi, Adams, loc. sub cit, ii, 185S, 660. 

 Pisum rubellum, Adams, loc. sub cit, ii, 1858, 660. 

 Pisum zonatum, Adams, loc. sub cit, ii, 1858, 660. 

 Pisidium retusum, 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. 



