80 



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



Fii:. 13G. 



Pliysa. sayi. 



Pliysa sayii, TappAxV. — Shell sinistral, ovate, color browni.sh-yellow 

 or chestnut ; whirls five; the first large, the others small, terminating in 

 an acute, dark brown apex ; ajierture large, four-tiftlis 

 of the length of the shell; translucent. Length 1, 

 breadth -{"^ inch. 



I first found this shell, May, 1837, in a small lake 

 called Lake Pipiu, which is separated about fifty rods 

 from the Cuyahoga River, in Franklin Township, 

 Portage County, Ohio, the same locality where was 

 found the Anoilonta pepiniana, Lea. All the shells of 

 this species hitherto found were dead, although much 

 time was spent in examining for live ones, in May, 

 1837, and June, 1838. A few only were found, and 

 are in the cabinets of Mrs. Say, Dr. Kirtland, Dr. 

 "Ward and my.self. (Tdppan.) 



Phym sayii, Tappan, Amer. Journ. Sc. [i], XXXV, 3G9, pi. iii, f. 3 (1839). 



I am unacquainted with this species. Judging from the de- 

 scription and figure, which I have copied above, I should not 

 agree with Haldeman iu placing it in the synonymy of P. 

 ancillaria. 



Physa Vinosa, Gocld. — Shell thin, ovate-globose, red, with minute 



spiral strise and thin epidermis ; spire obtuse ; whirls four, tlie last very 



large; aperture ovate-lunate, three-fourths the shell's 



Fig. 137. length, liver brown within ; columella straight and thin. 



Length ^, lat. J inch. 



Brought by Dr. C. T. Jackson from the Lake Superior 

 region. 



A remarkably inflated species, most like P. ancillaria, 

 Say, but is not shouldered or widest behind the middle, nor 

 tapering anteriorly. It is well distinguished by its thin 

 Physamnom. structure, striated surface, wine-red color externally, and 

 liver-brown internally. (Gould.) 



Physa vinosa, Gould, Proc. Bost. Soc. N. H. II, 263, fig. (1847) ; in Agassiz' 

 Lake Sup. 244, pi. vii, f. 10-11 (1850) ; Otia, 201. 



M 



