ITO AMERICAN JOURNAL 



Ph. striata, Lea. — Proc. Acad. Nat. Sci., p. 115. 1864. 

 Habitat. — Gila Eiver and San Diego, (Gould,) Santa Ana 

 River, Los Angelos County, Cal., Mohave River, (Coll. Try on.) 



**^ 



38. Pn. SPAESESTRIATA, Ttyon, MS. 



Habitat. — San Joaquin Yalley, California, (Tryon.) 



39. Ph. costata, Newcomb. 



Ph. costata^ Newcomb. — Proc. Cal. Acad. Nat. Sci. 

 Habitat. — California, (Newc.) 



**** 



40. Ph. virginea, Gould. 



Physa virginea^ Gould. — Proc. Boston Soc. Nat. Hist., 

 ii., p. 215. 1847. 



Mollusca, U. S. Exploring Exped. p. 220, f. 138. 1852. 



Habitat. — Sacramento River, (Gould,) Puget's Sound, Ore- 

 gon, (Coll. Tryon.) 



41. Ph. venusta. Lea. 



Ph. venusta, Lea. — Proc. Acad. Nat. Sciences, p. 116. 1864. 

 Habitat. — Near Port Vancouver, Oregon, (Lea.) 

 Very closely allied to, if it does not = Virginea. 



42. Ph. texuissima. Lea. 



Ph. tenuissima, Lea. — Proc. Acad. Nat. Sciences, p. 114. 



1864. 

 Habitat. — Alexandria, La., (Lea.) 



43. Ph. Smithsoniana, Lea. 



Ph. iSmithsoniana, Lea. — Proc. Acad. Nat. Sci., p. 115. 



1864. 

 Habitat. — Loup Fork, of Platte River, (Lea.) 



44. Ph. Troostiana, Lea. 



Ph. Troostensis, Lea. — Proc. Amer. Philos. Soc, vol. 2, p. 



32. 1841. 

 Ph. Troostiana, Trans. Amer. Pliilos. Soc, vol. ix., p. 7. 1844. 

 Habitat. — •Tennessee. 



45. Ph. gyrina, Say. 



Ph. gyrina, Say. — Jour, of Acad. Nat. Sci. 1st series, vol. 

 2, p. 171. 1821. 



Adams, Sliells of Vermont, p. 4. 1842. 



Haldeman, Monog. of Limniades, No. 6, p. 32, t. 3, f. 



1—6. 1843. 

 DeKay, Mollusca of New York, p. 79, t. 5, f. 87. 1843, 



Ph. elliptica, Lea. — Amer. Philos,, Trans., vol. v. p. 115, 

 1. 19, f. 83. 1837. 



