252 AMERICAN JOURNAL 



21. L. DESiDiosA, Say. 



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

 1821. 

 Narrative of Long's Expedition, p. 263. 1824. 

 American Conchology, t. 55, f. 3. 1834. 

 Binney's Edit., p. QQ, 130 and 211, t. 55, f. 3. 1858. 

 Gould, Invert. Mass., p. 219, f. 150. 1841. 

 Adams, Moll. Middlebury, Yt. 1841. 



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

 Shells of Vermont, p. 4. 1842. 

 Haldeman, Monog. of Limniades, Part 4, p. 31, t. 10. 



1842. 

 DeKay, Moll. K Y., p. 73, t. 5, f. 78. 1843. 



L. PhiladeJphica, Lea. — Philos. Proc, vol. ii., p. 32. 1841. 

 Am. Philos, Trans., vol. ix., p. 8. Observ., vol. iv., p. 8. 

 1844. 



L.fusiformis, Lea. — Philos. Proc, vol. ii., p. 33. 1841. 

 Am. Philos. Trans., vol. ix., p. 10. Observ., vol. iv., p. 10. 

 1844. 



Habitat. — New England to Yirginia, and westward to Iowa. 



22. L. OBEUSSA, Say. 



L. obrussa, Say. — Jour. Acad. Nat. Sci., vol. v., p. 123. 1825. 

 Binney's Edit., p. 113. 1858. 

 DeKay, Moll. N. Y., p. 75. 1843. 



L. acuta, Lea. — Am. Philos. Trans., vol. v., p. 114, t. 19, f. 

 81. Observ., vol. i., p. 226. 1837. 



L. desidiosa, Say. — Haldeman, ISfonog. of Limniades, Part 

 v., p. 48, t. 13, f. 16—18. 1842. 



Habitat. — New England to Maryland. Oakland, Cal., (Coll. 

 Try on.) 



23. L. BixxEYl, Tryon. 



L. Bin7ieyi, Tryon. — Am. Jour. Conch., vol. i., part 3, p. 

 229, t. 23, f. 3. 1865. 



Habitat. — Hell Gate Eiver, Oregon, (Tryon.) 



24. L. EMARGINATA, Say. 



L. einarginata, Say. — Jour. Acad. Nat. Sci., vol. ii., p. 170. 

 1821. 

 Narrative of Long's Exped., p. 263. 1824. 

 Am. Conch., t. 55, f. 1. 1834. 



Binney's Edit., p. 67, 130 and 211, t. 55, f. 1. 1858. 

 Haldeman, Monog. of Limniades, Part 3, p. 10, t, 2. 1841. 

 DeKay, Moll. N. Y., p. 73, t. 4, f. 77. 1843. 



