OP CONCHOLOGY 251 



15. L. PALUSTRis, Mliller. 



L. palmtris, Miiller. — Zool. Dan. Prodr. 2934. 1776. 



Rossmiissler, Iconog. Land nnd Siissw. Moll., vol. i., p. 96, 

 t. 2, f. 51, 52. 1835. 



L. frarjilis^ Linnaeus, (sp.) — Faun. Snecica, 2187. 1761. 

 (Part.) Haldeman, Monog. of Limniades, Part 4, p. 20, t. 



6, f. 7, 9. 1842. 

 DeKaj, Moll. N. Y., p. 68, t. 4, f. 68. 1843. 



Habitat. — W. New York; Micliigan; Nebraska; Mountain 

 Lake, Cal. ; Laguna de los Cavallos, New Mexico, (Coll. Tryon.) 



16. L. EXP ANSA, Haldeman, 



Limnsea expansa, Haldeman. — Suppl. to Part 1, Monog. of 

 Limniades, p. 2. 1840. 

 Monog. of Limniades, Part 4, p. 29, t. 9, f. 6—8. 1842. 

 DeKaj, Moll. N. Y., p. 75, t. 36, f. 348. 1843. 



Habitat. — Vermont. 



17. L. SuMASSi, Baird."''^ 



L. Sumassi^ Baird. — Proc. Zool. Soc. London. 1863. 



Habitat. — British Columbia, (Baird.) Washington Terri- 

 tory. Oregon, (Coll. Tryon.) 



18. L. Haydexii, Lea.f 



L. Haydenii, Lea. — Proc. Acad. Nat. Sci., p. 166. 1858. 

 Habitat. — Nebraska. 



19. L. PROXiMA, Lea. 



L. proxi7na, Lea. — Proc. Acad. Nat. Sci., vol. viii., p. 80. 

 1856. 



Habitat. — Arroya San Antonio, Cal., (Lea.) Stein's Valley, 

 S. E. Oregon, (Coll. Tryon.) 



20. L. Tryoxii, Lea. 



L. Traskii, Lea.+— Proc. Acad. Nat. Sci., p. 113. 1864. 



L. Tryonii, Lea. — MSS. 



Habitat. — Arroya San Antonio, Cal., (Lea.) 



* Probably only a variety of Nuttalliana, Lea. 



t Doubtfully distinct from Nuttalliana and Sumassi. 



X Name preoccupied by G. W. Tryon, Jr., Proc. Acad. Nat. Sci. 1863. 



