HELIX §. 49. 229 



Helix tenera Chemn. ed. II. Helix N. 284. l. 49. f. 12. 13. 

 Habitat in insulis Philippinis Mindoro, Tablas (Cuining). 



Obs. Differt a praecedente spira breviore, anfractibus conve.vioribus el 

 peristomale. — Variat spira depressiore. 



604. H. trigonostoma Pft*. 



T. iniperlorata, trochiforiuis , tenuis, oblique slrijtula, iineis 

 nonnullis concentricis impressis notata, aiba, fasciis superne linea- 

 ribus, basi lalioribus, fusco - violaceis ornata; spira late conica; 

 anfr. 4 '/2 planiuscuh, ultimus spiram superans, obsolete angulatus; 

 columella brevis, callosa; apertura subtriangularis; perist. sim- 

 plex , margine supero parum expanso, columeilari appresso, re- 

 llexo. — Diam. maj. 27, min. 22, alt. 18 mill. (Mus. Cuming.) 

 Helix trigonostoma Pfr. in Phil. Icon. I. 7. p. 134. t. 4. f. 8. 



— — Pfr. in Pi-oc. Zool. Soc. 1845. p. 41. 



— — Clwnn. ed. II. Helix N. 282. t. 49. f. 10. 

 Habitat prope Vera Cruz in prov. Honduras Americae centralis. 



Obs. Differt a praecedente spira niinus elevata, anfractibus planis, colu- 

 nieila brevi et aperlurae forma. 



605. H. Dumonti Pfr. 



T. imperforata , coniformis, apice obtusiuscula, albida; aufr. 

 o lati, convexiusculi, ultimus basi subplanulatus, ad peripheriam 

 iinea 1 nigricante cinctus; columella intrans, obliqua, dilatata; 

 apertura perobliqua, lunato-ovalis; })erist. simplex, breviter ex- 

 pansum, margine supero antrorsum arcuato, basaii subreflexo. — 

 Diam. maj, 26, min. 21 , alt. 24 mill. (Mus. Cuming.) 



Helix Dumonti Pfr. in Phil. Icon. II. 11. p. 8 4. Helix t. 7. f. 6. 



— — Chcmn. ed. U. Helix N. 283. t. 49. f. 14. 15. 



/?? Minor, apice acutiuscula, anfr. 6, ultirao rubro-bicingulato. — Diani. 

 niaj. 22 , min. 19, alt. 23 niill. (ex ic.) 



Helix coniformis Quoy et Gaim. Astrol. II. p. 105. t. 8. f. 13—17. 



Nec Fer. 

 Habitat in insula Mindoro Philippinarum (Cum.); var. /?'? prope 

 porlum Carteret Novae Hiberniae (Quoy). 



606. H. coniformis Ferussac. 



T. imperforata, orbiculato-conoidea, laevigala, albido-Iusces- 

 cens, fasciis fuscis saepe articulatis ornata ; sutura profunda; anfr. 

 5 convexi, ultimus basi planiusculus, antice desceiidens; apertura 

 perobliqua, magna, ovalis; perist. albuni, tenue, late expansum, 

 marginibus coimiventibus , basali reflexo, columellari dilatato, 

 appresso. — Diam. maj. 24, min. 18, aU. 18 inill. (Mus. Cuming.) 

 Helix coniformis (Helicostyla) Fer. pr. 32 1. Hi.st ( 108 f. I 



— — Wood suppl ( 7 r 20. 



