IIELIX §. 38. 39. 191 



ullimus antice vix deflexus, basi convexiusculus; apertura per- 

 obliqua, subcircularis ; perist. continuum, vix disjunctuni, lenue, 

 superne rectum, basi breviter reflexum. — Diam. maj. 7, min. 6'/«, 

 alt. 9 mifl. (Cofl. Nr. 289.) 



Helix turricida Loive Faun. Mader. p. 58. i. 6. f. 21. 



— — Chenm. ed. U. Helix N. 573. t. 91. f. 5 — 7. 

 Turricula turricula Beck ind. p. 10. 



Habitat in insula flheo de Cima, juxta ins. Portosanclo. 



493. H. thiarella Webb et Berthelot. 



T. anguslissime umbilicata, trochiformis, albo et fusco varie- 

 gata, bicarinata, ad suturam tubercuIato-pHcata; spira conica, 

 apice obtusa, cornea; anfr. Cy^, ultimus basi confertim et concen- 

 trice granulato-sulcatus , antice angulatim deflexus; apertura sub- 

 horizontalis, circularis; perist. expansum, continuum, solutum. — 

 Diam. maj. 7, min. 6/3, alt. 5 mill. (Coll. Nr. 290.) 

 Helix thiarella Wehh et Berth. syn. p. 316. 



— — Orh. canar. p. 62" l. 1. f. 26 — 28. 



— — Chemn. ed. U. Helix N. 576. t. 9 1 . f. 1 4 — 1 6. 

 Geomitra hicarinata Sivns. Malac. p. 166. f. 20. 

 Turricula thiarella Beck ind. p. 1 0. 



Ochthephila thiarella Beck ind. p. 1 8. 



Habitat in insulis Canariis et Madera. (In Roccellae sarcinis invenit 

 Cl. Terver.) 



§. 39. 

 494. H. follis Ferussac. f 



T. imperforata, ovato-conica, albida; spira oblusa; anfr. 

 4 convexi, ultimus reliquos longe superans, basi fulvescens et 

 cingulis 3 pallide rufis, interruptis ornatus; aperluralunato-ovalis; 

 perist. simplex, acutum, margine columellari subrecte descen- 

 dente, dilatato, reflexo, albo.' — Diam. 86, alt. 80 mill. (ex ic. 

 spec. unici Mus. Paris.) 



Helix follis (Helirogena) Fer. pr. 19. Hist. t. 17. f. 4. 

 Habitat . . . ? 



495. H. undata Lowe. 



T. imperforata, depresse turbinala, nigricanti.-fusca, plicis 

 validis undalim corrugata; spira late conoidea; anfr. 5/4 convexius- 

 culi, ultimus antice valde deflexus; aperlura ampla, lunato-ovalis; 

 perist. superne simplex, marginibus callo tenuissimo junctis , co- 

 lumellari dilatato, appresse reflexo, plano. — Diam. maj. 22. 

 min. 19, alt. U mifl. (CoU. Nr. 291.) 



Helix imdata Loive Fann, Mader. p. 41. t. 5. f. 5. 



