318 HELIX §. 59. 60. 



culi, ultimus inflatus; ajDertura subtriangularis ; perist. latum, intus 

 album, labiatum, marginibus callo tenui, dentem vaiidum, lingui- 

 formem emittente junctis, dextro exjjanso, basali strictiusculo, 

 reflexo, columellari dilatato. — Diam. maj. 25, min. 20, alt. 

 i7mill. (CoU. Nr. 507.) 

 Helix elevata Say in Philad. journ. II. p. 154. 



— — Say Amer. Conch. t. 37. f. 2. 



— — Bimi. in Bost. journ. I. p. 490. t. 19. 



— — Pfr. Symb. II. p. 27. 



— — Chemn. ed. II. Helix N. 30. p. 56. t. 7. f. i 1 . 1 2. 



— Knoxvillvia (Hehcodonta) Fer. pr. 94. Hist. t. 49. f 5. 6. 

 Mesodon helidnum Rafin. ( Fer. ) 



Tridopsis elevata Beck ind. p. 22. 

 Habitat in America boreali: Cincinnati, Ohio (Say), Knoxville, 

 Tennessee (Fer.), Pennsylvania, Virginia (Binn.). 



§. 60. 

 S30. H. mammilla Ferussac. . . . ' ( ' - ^ ^ ' /- 



T. anguste umbilicata , subglobosa , valde rilgosa et siifcaia, ' 

 fulvescens, fusco-bifasciata; spira semiglobosa; anfr. 6 convexi, 

 sensim accrescentes; apertura perobliqua, irregulariter lunato- 

 ovalis; perist. late expansum, reflexum, albidum, marginibus 

 callo junctis , basali dilatato , umbilicum angustum, pervium semi- 

 tegente. — Diam. maj. 43, min. 37, alt. 29 mill. (Spec. Mus. Brit.) 

 Helix mammilla (Helicella) Fer. pr. add. p. 67. Hist. t. 25. f, 1.2. 



— — Quoy et Gaim. Astrol. II. p. 93. t. 7. f. 3—5. 



(c. anim.) 



— — Zam. ed. Dh. 163. p. 105. 

 Obha mammilla Beck ind. p. 30. 



Habitat in insula Celebes. Rarissima ! 



831. H. papilla Milller. 



T. anguste umbilicata, ovato-globosa, sblida,' vaTrde'unau- 

 lato-costata , superne coerulescente et rufo variegata (costis albis), 

 basi albida; spira elata, apice obtusa, nitida; anfr. b/z convexius- 

 culi, ultimus obtuse angulatus, antice deflexus; apertura perobli- 

 qua, transverse oblonga, intus nitida, livida; perist. late reflexum, 

 marginibus callo continuo, prominente, umbilicum fere tegente 

 junctis , supero sinuoso, basali obsol6te dentato, — Diam. maj. 32, 

 min. 25, alt. 23 mifl. (Mus. Cuming.) 



Helix papilla Milll. verm. II. p. 100. N. 298. 



— — (Hehcogena) Fer. pr. 43. Hist. t. 25 B. f. 5. 



— — Lani. 79. p. 8 7. ed. Dh. p. 65. 



— — Chemn. ed. II. Helix N. 124. t. 21. f. 8. 9. 



