IIELIX §. 5. 25 



Helix subplicata Lam. ed. Dh. \^^. p. 95. 



— — Chemn. ed. II. Helix N. 198. t. 29. f. \.%. 

 Pomatia subplicata Beck ind. p. 44. 



Ilabitat in insula Baxo prope Porto Sancto. 



23. H. aperta Born. 



T. imperforata, ovato-globosa, inflata, tenuis, plicato-striata, 

 olivaceo-fusca; anfr. 4 convexiusculi, rapide accrescentes; apertura 

 acute obovalis; perist. simplex, acutum, albo-limbatum. — Diam. 

 maj. 26, min. leyo, alt. 27 mill. (ColL Nr. 13.) 

 Helix aperta Born Mus. p. 387. t. 15. f. 19. 20. 



— — Gray Manual p. 127. t. 1 1. f. 129. 



— — Chem7i. ed. II. Helix p. VU. N. 1 . t. 1 . f. 1 - 4. 



— terrestris Forsk. (teste Beck). 



— neritoides Chemn. IX. P. 2. p. 150. t. 1 33. f. 1204. 5. 



— naticoides Drap. p. 92. t. 5. f. 26. 27. 



— — (Helicogena) Fer. pr. 15. Hist. t. 11. L 17 — 20. 



— — Lam. 1 3. p. 69. ed. Dh. p. 35. 



— — Blainv. Malac. p. 460. t. 40. f. 6. 



— — /?ossm. V. p. 1. f. 285. (n. f. 156. anun.) 



— — Kiister in Chemn. ed. II. p. 24. 



— karalitana Prunn. teste Villa cataL 



— Sow. Conch. Man. L 517. 



Cantareus naticoides Bisso IV. p. 64. 

 Pomatia aperta Beck ind. p. 44. 



Coenatoria naticoides Held in Isis 1 837. p. 910. 



Gualt. t. 1 . L F. 

 Habitat in Gallia meridionali , Italia , Sicilia , Graecia , Turcia, 

 Algeria, etc, nec uon in insula Guernsey (Forbes). 



Obs. Epiphragma hibernum album, vesicale, valde convexum. 



24. H. tristis Pfr. 



T. imperforata, ovato-globosa , tenuis, striala, lineis concen- 

 tricis obsolete decussata, olivaceo-fusca, rufo-5-fasciata, spira 

 parvula, conoidea; anfr. 4 convexiusculi, ultimus inflatus; apertura 

 lunato-ovalis, intus nitida; perist. simplex, rectum, margine colu- 

 mellari dilatato, reflexo, appresso. — Diam. maj. 21, min. 18, alt. 

 18 mill. (CoIL Nr. 14.) 



Helix tristis Pfr.in Proc. Zool. Soc. 1845. p. 66. 



— — Philippi Icon. n. 15. p. 184. Helix t. 9. L 3. 



— — Chemn. ed. U. Helix N. 196. t. 28. f. 20. 21. 



— ceratina Shuttleworth in Mittheil. d. naturf. Ges. in Bern 1 843. 



p. 66. (absque diagnosi. ) 

 Habitat in insula Corsica, in arenosis prope Ajaccio. (Shuttl.) 



