IIELIX 
i. 49. 
229 
Helix tenera Chemn. ed. U. Helix N. 284. t. 49. f. 12. 13. 
Habitat in insulis Philippinis Mindoro, Tablas (Cuming). 
Ot>s. Di/Tert a praecedente spira breviore, anfractibus convexioribus el 
|ieristomale. — Variat spira depressiore. 
604. H. trigonostoma Pft*. 
T. imperforata, trochiformis , tenuis, oblique striatula, lineis 
nonnullis concentricis impressis notata, alba, fasciis superne linea- 
ribus, basi latioribus, fusco- violaceis ornata; spira late conica ; 
anfr. l/a planiusculi, ultimus spiram superans, obsolete angulatus; 
columella brevis, callosa; apertura subtriangularis; perist. sim- 
plex, margine supero parum expanso, columellari appresso, re- 
flexo. — Diam. maj. 27, min. 22, ali. 18 mill. (Mus. Cuming.) 
Helix trigonostoma Pfr. in Phil. Icon. I. 7. p. 154. t. 4. f. 8. 
— — Pfr. in Proc. Zool. Soc. 1845. p. 41. 
— — Cliemn. ed. II. HelLx N. 282. l. 49. f. 10. 
Habitat prope Vera Cruz in prov. llonduras Americae centralis. 
Obs. Differt a praecedente spira minus elevata, anfractibus planis , colu- 
mella brevi el aperturae forma. 
605- H. Dumonti Pfr. 
T. imperforata, coniformis, apice obtusiuscula, albida; anfr. 
5 lati, convexiusculi, ultimus basi subpianulatus, ad peripheriam 
linea 1 nigricante cinctus; columella intrans, obliqua, dilatata; 
apertura perobliqua, lunato-ovalis; perist. simplex, breviter ex- 
pansum, margine supero antrorsum arcuato, basali subreflexo. — 
Diam. maj. 26, rnin. 21 , ait. 24 mill. {Mus. Cuming.) 
Helix Dumonti Pfr. in Phil. Icon. II. 11. p. 84. Helix t. 7. f. 6. 
— — Chenm. ed. U. Helix N. 285. i. 49. f. 14. 15. 
/9? Minor, apice acutiuscula, anfr. 6, ultimo rulji'o-bicingulato. — Diam, 
maj. 22 , min. 19, all. 23 mill. (e.x ic.) 
Helix co7iiformis Quoy et Gaim. Astrol. II. p. 105. t. 8. f. 15 -—17. 
Nec Fer. 
Habitat in insula Miadoro Philippinarum (Cum.); v^^k. /5? prope 
portum Carteret Novae Hiberniae (Quoy). 
606. H. coniformis Ferussac. 
T. imperforata, orbiculato-conoidea, laevigata, albido-fusces- 
cens, fasciis fuscis saepe articulatis ornata; sutura ])rofunda ; anfr. 
o convexi, ultimus basi planiusculus, antice descendens; apertura 
perobliqua, magna, ovalis; perist. album, tenue, late expansum, 
marginibus conniveutibus , basali reflexo, columellari dilatato, 
appresso. — Diam. maj. 24, min. 18, ait. 18 mill. (Mus. Cuming.) 
Helix coniformis (Helicostyla) Fer. pr. 321. Hist. t. 108. f. I. 
— — IVoocZ suppi, t. 7. f. 20. 
