IIELIX §. GO. f)!. 323 



843. H. pachyloma Mcnke. 



T. angiistissime umbilicala, conoideo-globosa, tenuiuscula, 

 subiilissime striatula, pallide cornea; spira conoidea, vertice acu- 

 tiusculo; anfr. Syo vix convexiusculi, ultimus ventrosus, antice 

 constrictus, non descendens; apertura subverticalis, sulitriangu- 

 lato-lunaris; perist. breviter expansum , intus callosum, margine 

 dextro cum supero brevi angulum obsoletum formante, columel- 

 lari ad umbilicum reflexo. — Diam. maj. 12, min. 40 '/2, alt. 

 9 mill. (CoII. Meuke.) 



Helix jmclnjloma Menke in Zeilschr. f. Mal. 18 47. p. 32. 

 Habitat in Texas. 



Obs. Hoc loco conferanlur spccies in §. b1 enumeratae, interdum aperle 

 perforatae. 



S44. H. Mobiliana Lea. >{' 



T. subglobosa, rufo-cornea, nitida, perforata; spira brevis, 

 obtusa; sutura impressa; anfr. 6 convexi; aperturalunata; labrum 

 reflexum. (L.) — Dimens. ? 



Helix Mobiliana Lea in Proc. Am. phil. Soc. 1841. 11. p. 82. 

 Habitat in America boreali, prope Mobile Alabamae. 



§• 61. 

 845. H. pileiformis Moricand. 



T. perforata, trochiformis , tenuis, striata, fragilis, olivaceo- 

 fusca; spira elata, conica, acuta; anfr. 7 planati, ultimus carina- 

 tus, basi convexiusculus ; apertura subquadrangularis ; perist. 

 simplex, marginibus callo tenui junctis, dextro et basali expan- 

 sis, columellari dilatato, reflexo, foramen occultante. — Diam. 

 maj. 12, min. 11 , alt. 14^2 mifl. (CoII. Nr. 512.) 



Helix pileiformis Moric. Mem. Gen. VIL P. II. p. 420. t. 2. f. 2. 



— — Lam. ed. Dh. 22 4. p. 134. 



— — Chemn. ed. IL Helix N. 315. t. S5. f. 9. 10. 

 GeotrocJms pileiformis Beck ind. p. 47. 



Bulimus pileiformis Pfr. Symb. H. p. 120. 



Habitat in Brasilia: lllheos (Moric). 



Obs. Ex affinilalc cum Bul. opalino Sow. aliisque speciebus H. pileifor- 

 mem antea Bulimis adnumeraveram. 



846. H. pileus Miillcr. 



T. perforata, coniformis, laevigata, alba, rufo varie fasciata; 

 spira elongata , acutiuscula ; anfr. 6 planiusculi, ultimus obsolete 

 angulatus, basi planulatus, castaneus; columella brevis, obliqua; 



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