IIELIX §. 134. 321 



'2066. multilineata Say. (Coll. 1107. — Biitn. Terr. 

 Moll. II. p. 103. t. 3 et Leitb/ ib. I. t. 8. f. 1—6. 

 — Bv. n. 691. t. M8. — Mesodon Pfr. Yers. 

 p. 135. — Anchistoma multil. [Mesodon] Ad. Gen. 

 p. 206.) Mon.III. p.269. 



2067. H. Pennsylvanica Green. 



T. imperforata , globoso-conoidea , tenuiuscula , obiique 

 coslulato-striata, striis spiralibus sub lente confertissime de- 

 cussata, diaphana, nilidula, lutea; spira elata, convexo-conoi- 

 dea; anfr. Sy^ convexi, sensim accrescentes, ultimus rotun- 

 datus, antice deflexus et constrictus, basi profunde excavatus; 

 aperlura fere diagonalis, irregulariter subquadrangulari-lunaris, 

 intus submargaritacea ; perist. crasse albolabiatum , margine 

 supero expanso, basali reflexo, columellari declivi, introrsum 

 dentato-incrassato , regione umbilicali tenuiter expanso , ad- 

 nato. — Diam. maj. 20, min. 17, alt. lay^ mill. (Coll. Nr. 1108.) 



Helix Pennsylvanica Green Contrlb. to Maclur. Lyc Nr. \. p. 8. 



— - — Binn. in Bost. Journ. L p. 483. l. 16. 



— — Pfr. Mon. Hel. L p. 291. n. 759. 



— — De Kay iMoll. N. York p. 41. t. 3. f. 35. 



— — Chenin. ed. nov. IL p. 5L t. 73. L 4. 5. 



— ~ Bitm. Terr. Moll. II. p. 105. t. 7. 



— — Reeve Conch. ic. n. 676. t. 117. 



— — (Patera) Alb. Helic. p. 97. 



— — (Mesodon) Pfr. Vers. p. 135. 



— Mitchelliana Desh. in Fer. Hist. p. 137. n. 182. t. 97. 



f. 4 — 7. 

 Polygyra Pennsylvanica M. E. Gray Fig. t. 291. f. 5. 

 Anchistoma Pennsylva^iicwn (Mesodon) H. et A. Adams Gen. II. 



p. 207. 

 Ilabitat Ohio, Pennsylvania. 



2068. H. clausa Say. 



T. subimperforata, conoideo-scmiglobosa, solidula, conferte 

 costulato-striata , nitidula, pallide lulea ; spira subregulariter 

 conoidea; anfr. 5^2 convexiusculi, sensim accrescentes, pen- 

 ultimus subangulatus, ultimus rotundatus, antice subconstrictus 

 et breviter deflexus; umbilicus angustus subapertus vel in ad- 

 ultis omnino tectus; apertura diagonalis, subregulariter lunaris; 

 perist. crasse albolabiatum , undique subangulatim reflexum, 

 margine columellari subdilatato. — Diam. maj. ISy^, min. 16, 

 alL 11^2 mill. (Coll. Nr. 1109.) 



Helix clausa Say In Philad. Journ. II. p. 154; Araer. Conch. 



t. 37. f. 1. 



— — /?mw. in Bost. Journ. I. p. 482. t. 15. 

 IV. 21 



