176 INVERTEBRATA OF MASSACHUSETTS. 



Shell nearly globular ; whorls five, rounded ; suture distinct ; 

 epidermis brownish, covered with numerous sharp, rigid hairs ; 

 aperture very narrow, almost closed by an elongated, lamelliform 

 tooth, situated on the pillar lip, and extending from the centre of 

 the base nearly to the junction of the lip with the outer whorl ; 

 lip narrow, very much depressed and reflected against the body 

 whorl, with a deep cleft or fissure near the centre of the inner 

 margin ; base convex ; umbilicus wholly closed. Greatest diam- 

 eter 1^ inch, ordinary size less than | inch diameter. 



Animal whitish, head and tentacula slate-colored ; foot slender, 

 semi-transparent, length less than twice the breadth of the shell ; 

 cavity of the tentacula apparent when they are drawn in, by two 

 dark lines, with a whiter space between. 



Found to the west of Connecticut River, not common. In the 

 Middle and Western States it is abundant. 



This very peculiar snail is at once distinguished from evei'y other 

 species by the singular fissure on the inner edge of the lip. There is 

 sometimes a minute, tooth-like process on the inner and upper part of 

 the lip, which is visible only on looking into the aperture. Sometimes 

 its hairy vesture covers it at every part ; at other times it is quite 

 smooth. Dr. Binney has once or twice noticed a white band on the 

 body whorl. 



Helix pulche'lla. 



Shell mimite, white, depressed ; whorls four, suture deep ; aper- 

 ture circular, lip rejlexed, thickened ; umbilicus large. 



Figure 102. 



State Coll., No. 41. Soc. Cab., No. 1056. 



Turbo helicinus, Lightfoot ; Land. Phil. Trans. 1786. 



Helix pulchella, Muller; Ferm. Hist., ^c. No. 232,30. Draparnat'd ; Hist. 



<^c., 112, pi. 7, f. 30 to 34. Brard ; Moll., 56, t. 2, f. 9. Alder ; Mag. Zool. and 



Bot., ii. 109. Lam., An. sans Vert., viii. 76. Deshayes ; Encyc. Meth., Vers, ii. 



440. Fe'kussac ; Hist, dcs Moll., No. 173. Binney; Bost. Journ. JVat. Hist., 



iii. pi. 13. 

 Helix paludosa, Montagu; Test. Brit., 440. Rackett; Lin. Trans., viii. pi. 



5, f. 5. 

 Turbo paludosus, Turton ; Conch. Diet., 228. 

 Helix minuta, Say ; Journ. Jlcad. JVat. Sc., i. 123. 



