168 AMERICAN JOURNAL 



18, Ph. brevispira, Lea. 



Ph. brevisjrira, Lea. — Proc. Acad. Nat, Sci., p. 116. 1864. 

 Habitat. — Ottawa Eiver, Canada West, (Lea.) 



19, Ph. Niagarexsis, Lea. 



Ph. Niagarensis, Lea, — Proc, Acad, Nat, Sci., p, 114. 

 1864, . 



Habitat. — Niagara Eiver, New York, (Lea.) 



20, Ph. distinguenda, Tryon, MS, 



Habitat. — Marysville and Stockton, California, (Tryon,) 



21, Ph, occidentalis, Tryon, MS. 



Habitat. — San Francisco, Centreville, Fort Tejon, Clear 

 Lake, San Geronimo Creek, Dry Creek, California; Umpqua 

 Eiver, Warner's Valley, Oregon, (Tryon.) 



22, Ph. politissima, Tryon, MS. 

 Habitat. — Sacramento, California, (Tryon.) 



23, Ph. Blandii, Lea, 



Ph. Blandii, Lea.— Proc, Acad. Nat. Sci., p. 116. 1864, 

 Habitat. — California, (Lea,) Marysville, California, (Coll. 

 Tryon,) 



24, Ph, malleata, Tryon, MS, 



Habitat. — Hellgate Eiver and Goose Lake Valley, Oregon. 

 (Tryon,) 



25, Ph, Nuttallii, Lea, 



Ph. Nuttallii, Lea,— Proc, Acad. Nat. Sci., p. 116. 1864. 

 Habitat. — Lewis' Eiver, Oregon, (Lea.) 



26, Ph, diaphana, Tryon, MS. 

 Habitat. — Oakland, California, (Tryon.) 



27, Ph. Whitei, Lea. 



Ph. Whitei, Lea,— Proc, Acad, Nat. Sci,, p, 114, 1864, 

 Habitat. — Lafayette, Georgia ; Verdigris Eiver, Kansas, 

 (Lea ;) Cooper Eiver, South Carolina. (Coll, Tryon,) 



28, Ph, pomilia, Conrad, 



Physa pomilia, Conrad, — Amer, Jour, Sci,, 1st series, vol. 

 XXV,, p, 343. 1883. 



Miiller, Synopsis Test, Viv,, p. 85, 1836, 

 DeKay, Mollusca of New York, p, 81. 1843. 



Habitat, — Claiborne, Alabama, (Conrad.) 



