100 LAND AND FRESH-WATER SHELLS OP N. A. [PART IL 



Physa hypnorum, Linn^ds, &c. — Haldemax, Mon. 36, pi. v, f. 4-9 (1842). 

 —Adams, Shells of Vermont, 154 (1842). 



Physa elongata, Say, Journ. Acad. Nat. Sc. II, 171 (1821) : Binney's ed. 

 es.—GocTLD, Inv. 214, f. 143 (1841).— DeKay, N. Y. MolL 81, pi. vi, 

 f. 346 (1843).— Anon. Can. Nat. II, 211, fig. (1857). 



Physa glabra, DeKay, N. Y. Moll. 80, pi. v, f. 83 (1843). 



Physa elongatina, Lewis, Bost. Pr. V, 122, 298 (1855). 



Physa turrita, J. de C. Sowb. Fauna Bor.-Am. Ill, 315. 



Aplexa hypnorum, Chenu, Man. de Conch. II, 481, f. 3556. 



From Kansas to the District of Columbia, and from the At- 

 lantic to the Pacific in the British Possessions, ranging as far 

 north as Russian America. It is one of the species common to 

 the three continents. 



Mr. Say's type Is still preserved in the Philadelphia Academy. 



PJiysa tu7'rita is quoted without description by J. de C. Sow- 

 erby in Richardson's Fauna Boreali-Americana (III, 315), with 

 P. elongata, Say, and Bulla hypnorum, Linn, as synonyms. 



Physa elongatina was proposed as a specific name for some 

 forms of Bulinus hypnorum by Dr. Lewis. No description was 

 given. Subsequently the specimens were referred to Physa 

 glabra, DeKay. The description and figure of the latter now 

 follow : — 



Physa glabra, DeKay. — Shell sinistral, smooth, shining, elongated, with 

 five to six volutions ; suture impressed ; spire elongated into an acute 

 apex. Body whirl more than half of the total length. Aper- 

 ture oblong, acute above, rounded beneath, and half of the -p- -.^-i 

 total length. Columella sinuous, slightly reverted with a faint 

 oblique fold. Deep brownish-orange, approaching to copper. 



Length 0.4, of aperture 0.2. 



This shell, for which I am indebted to Dr. Budd, who ob- 

 tained it from Lake Champlain, appears in some collections 

 under the name of P. aurea, which it resembles in nothing 

 but color. It approaches P. elongata, but differs in its im- phnaa 

 pressed suture and the form of its columella. {DeKuy.) glabra. 



