HELIX. 143 



21. HELIX INFLECTA, SAY. 

 PLATE XLV. FIGURE 3. 



II. testa orbiculato-depressa, imperforata, corneo-lutes- 

 cente, rare hirsuta ; anfractibus striatis, striis minutis, 

 obliquis ; apertura angustissima, trilobata ; labro albo, denti- 

 bus duobus, acutis, inflectis, armato ; margine reflexo ; 

 regione umbilical! impressa ; dente albo, arcuato ad colu- 

 mellam affixo. 



SYNONYMS AND REFERENCES. 



Helix injlecta, SAY, Journ. Acad. II. 153, anno 1821. 

 KIRTLAND, Ohio Report, 173. 

 SAGER, Michigan Catalogue, 14. 

 BINNEY, Boston Journ. III. 358, pi. 9, f. 1. 

 Helix dausa, FERUSSAC, Tab. Syst. 38, No. 104. 



Hist. pi. 51, f. 2. 

 DESHAYES, Encyc. Meth. II. 230. 



in Lamarck, VIII. 114. 

 PFEIFFER, Monog. Helic. Viv. I. 420. 

 CHEMNITZ, 2d ed. t. 64, f. 25, 26. 

 Gonostoma claitsum, HELD, Isis, 1837. 

 Tridojisis injkcta, BECK, Index, 22. 



DESCRIPTION. 



ANIMAL dark bluish slate color, head and tentacles 

 almost black ; superior tentacles long and slender ; foot 

 narrow, in length more than twice the diameter of the 

 shell, terminating in an acute angle. 



SHELL depressed ; epidermis brownish horn color, 

 sometimes with very fine, hair-like projections ; whorls 

 five, with very minute, transverse striae ; suture not much 

 impressed ; aperture three-lobed, very much contracted ; 



