38 HELIX §. 8. 



vexus, medio depressus; spira oblusa; apertura obliqua , senii- 

 rotunda, acula, anterius supernc vix angulata. — Diani. 8, all. 

 5/2 mill. (Guill.) 



HeHx succimilata Le Guill. '\n Revuc zool. 18 42. p. 138. 

 /j. Mitior, tenuioi-, pallidior. 



Ilabitat in insula Gouaham, var. /? in Noukahiwa etc. 

 .59. H. tongana Quoy. 



T. impcrforata, orbiculato-conica, striatula, fragilis, peliucida, 

 carinata, corneo-albicans ; anfr. 6 convexiusculi, ultimus basi sub- 

 impressus; apertura angulato-lunaris; perist. simplex, acutum, 

 margine columeliari brevissimc redexo. — Diam. maj. 7, min, 6^;, 

 alt. 5 mill. (Coll. Nr. 36.) 



Ilelix toncjana Quoy et Gaim. Astrol. II. p. 130. t. 1 1. f. 19 — 23. 



— — Lam. ed. Dh. 190. p. 1 19. 



— — Chemn. ed. II. Ilelix N. 643. t. 99. f. 28 — 30. 

 Habitat in insula Tonga Tabou (Quoy), in insula Negros Philippi- 

 narum (Cuming). 



.59^ H. pcrtcnuis Gonld. -^ 



T. minuta, subglobosa, pellucida, nitidissima, viridi-aurea, 

 imperforata; spira deprcssa; anfr. V/-i convexi, ultimus amplus, 

 ad periplieriam angulatus, infra sulcis remotis radiatus; apertura 

 ampla, lunata ; labrum simplex. — Lat. /s, alt. '/lo poll. (G.) 



Ilelix perteniiis Gould 1846. Exped. shells p. 20. 

 liabitat in insula Aurora. 



Oh,s. «Aiiquantulum simiii.s H. eicetrinao et hicidae, sed magis giobulosa.- 



60. H< gradata Pfr. 



T. imperforata, globoso-turbinata , striatula, lenuis, hyalina; 

 spira turbinata, apice acuta; anfr. 6 convexiusculi, gradati, ultimus 

 medio acute cariuatus, basi convexus, sub lente minutissime con- 

 cenlrice striatus; apertura subtetragono-Iunaris ; perist. simplex. 

 aculum, margine columellari breviter et verticaliter descendente. 

 — Diam. maj. 5, min. 4%, all. 5 mill. (Mus. Cuming.) 



Helix gradata Pfr. in Proc. Zool. Soc. 1846. p. 110. 

 Ilabitat in insula Leyle Philippinarum. 



Obs. DiiTorl ab H. longana praccipuc spira elevala 



01. H. misclla Ferussac. 



T. imperforata, orbiculalo-convexiuscula, ti-nuis, obsoletis- 

 sime striatula, nitida, pellucida, pallide cornea; anfr. 5'/. planius- 

 culi, ultinms carinatus, basi convcxiusculus, medio imprcssus; 



