250 AMERICAN JOURNAL 



11. L. ZEBRA, Trjon. 



L. zebra, Tryon. — Am, Jour. Conch., vol. i., No. 8, p. 228, t. 

 23, f. 4. 1865. 



L. umbrosa, Say, (Part.) Ilaldeman. — Monog. Limniades, No. 

 4, p. 24, t. 7, f. 6. 1842. 



L. reflexa, Saj, (Part.) Ditto, No. 4, p. 26, t. 8, f. 1, 2. 



1842. 

 Habitat. — Michigan, Wisconsin, Iowa. 



12. L. EowELLii, Tryon. 



L. Bowellii, Tryon. — Am. Jour, Conch., vol. i.. No. 8, p. 

 228, t. 23, f. 1. 1865. 



Habitat. — California. 

 18. L. NUTTALLIANA, Lea. 



L. NnttaUiana, Lea. — Philos. Proc, vol. ii., p. 83. 1841. 

 Am. Philos. Trans., vol. ix., p. 9. Observ., vol. iv., p. 9. 

 1844. 



L. fragilis, Linn., (Part.) Haldeman. — Monog. of Limniades, 

 Part v., p. 53, t. 15, f 1. 1842. 



Habitat. — Oregon, (Lea.) San Francisco and Marysville, 

 Cal., (Coll. Tryon.) 



14. L. UMBROSA, Say. 



Z. umbrosa, Say. — American Conchology, t. 31, f. 1. 1882. 

 Binney's Edit., p. 188, t. 81, f. 1. 1858. 

 Chenu, Biblioth^que Conchyliologique, vol. iii., p. 48, t. 



7 f. 5. 



Adams, Moll. Middlebury, Vt. 1841. 



Am. Jour. Sci., vol. xl., p. 268. 1841. 

 Haldeman, Monog. of Limniades, Part 4, p. 24, t. 7. 1842. 

 DeKay, Moll, N, Y,, p, 68, t, 4, f. 76. 1843. 

 Gould, Mollusca, Wilkes' Expl. Exped., p, 122. 1852. 



L. elodes, Say. — Jour. Acad. Nat, Sci,, vol, ii., p. 169, 1821. 

 Am. Conch., t. 31, f. 8. 1882. 

 Binney's Edit., p. %Q and 188, t. 31, f. 8. 1858, 

 Chenu, Biblioth^que Conchyliologique, vol. iii,. p, 44, t. 



8 f 3 



Gould, Invert, Mass,, p. 221, f 146—7. 1841. 

 C. B, Adams, Moll. Middlebury, Vt. 1841. 



Am. Jour. Sci., vol. xl., p. 268, 1841. 



Shells of Vermont, p. 8. 1842. 



Habitat. — Canada, New York, Ohio, Indiana, Illinois, Mis- 

 souri, Iowa, Wisconsin; Mountain Lake and Oakland, Cal., 

 (Coll. Tryon.) 



