290 HELIX §. 55. 
arcuato. — Diam. maj. 8ya, miu. 8, ait. 5 mill. (CoII. Nr. 460. 
Spec. Lowean.) 
Helix calva Loioe Faun. Mader. p. 49. f. 5. f, 2G, 
Habitat in Maderae sylvis. 
* * 
* 
757. H. albolabris Say. 
T. obtecte perforata, depresso -globosa, costulis obliquis 
striisque spiralibus obsoletis , confertissimis subdecussata, flava; 
spira parum elata; anfr. 5 J /2 convexiusculi ; apertura rolundato- 
lunaris;-perist. angulatim late reflexum, intus album, nitidum, 
callosum, ad columellam brevem, arcuatam dilatatum. — R. a. = 
3:5. — Diam. maj. 36, min. 26, ait. 17 — 18 mill. (Coli. Nr. 461.) 
Helix albolabris Say in Nichols. Enc. Conch. t. 1. f. 
— — Say Amer. Conch. t. 13. f. 2. 
— — (Helicogena) Fdr. pr. 75. Hist. t. 43. f. 1 — 3. 
— — Binn. in Bost. journ. I. p. 475. t. '13. 
— — Gould report p. 170. f. 101. 
— — Pfr, Symb. 11. p. 22. 
— — Chemn. ed. II. Helix N. 53. t. 15. f. 7. 8. 
Tridopsis albolabris Beck ind. p. 22. 
List. syn. t. 47. f. 45 ! 
fi. Magis globulosa: Fer. t. 43. f. 4. 5. 
y. Maxima: diam. 38, ait. 28 mill. (ic. Fer.) 
Helix major Binn. in Bost. journ. I. p. 473. t. 1 2. 
— albolabris var, F4r. t. 46 A. f. 7. 
Habitat in America boreali: Missouri, Ohio, Georgia, Alabama, 
Florida etc. 
Obs. Conf. H. zalela Say. (Nr. 824.) 
758. H. multilineata Say. 
T. obtecte perforata, depresso -globosa, tenuis, pellucida, 
costulis minutis, obliquis, confertissimis ornata, corneo-straminea, 
cingulis variis (25 — 30) angustis rufis circumdata; anfr. 6 con- 
vexiusculi; apertura lunato-rotundata; perist. acutum, angulatim 
reflexum, margine columellari in laminam tenuem, umbilicum 
prorsus obtegentem, expanso. — Diam. maj. 23, min. 20, ait. 
14 mill. (Coli. Nr. 462.) 
Helix multilineata Say in Philad. journ. II. p. 150. 
— — (Helicogena) Fe’r. hist. t. 46 A. f. 3. 
— — Binn, in Bost. journ. I. p. 480. t. 14. 
— — Pfr. Symb. I. p. 41. 
— Chemn, ed. II. Helix N. 427. t. 71. f. 17. 18. 
Eurymiiera nndtilineata Beck ind. p. 45. 
