52 IIK1-I.\ f^. I'1. li. 



ovata, ant(M"ius subaiigulata, niargine acuta; uiuhilicus niinutissi- 

 nius, obsoletus. — Diani. 7, alt. G uiill. (Guill.) 



Ilelix conc.entvica Le Guillon in Uovuo zool. 18 42. p. t.3'i. 

 Ilabitat in insula Tongana : Vavao. 



10(1. H. pacifica Pfr. 



T. peiibrata, subtrocliiformis, tenuis, pellucida, striatula, 

 cornea; spira conoidea, acutiuscula; anfr. 6 — 6ya convexiusculi. 

 ultimus acute carinatus, basi paulo convexior, laevigatus, nitidus: 

 aperlura depressa, angulato-lunaris; perist. simplex, acutum, 

 margine columellari vix dilatato, in perforalionem puncliformem 

 inserto. — Diam. maj. 5%, min. 5, alt. 4 mill. (Coll. Nr. oo.) 

 Helix pacifica Pfr. Symb. lU. p. 6 6. 



— — Chenm. ed. II. Ilelix N. S49. t. 88. f. 3 — -5. 

 Ilabitat in insula : Cocos island oceani pacifici. 



Ohs. Similis sequonli, basi multo miuus convexa et oporlura iunari divorsa. 



101. H. livida (Stenopus) Guilding. 



T. perforata, conica, tenuis, striatula, fusco-cornea, dia- 

 phana; spira conica, obtusiuscula ; anfr. 6 convexiusculi, ultimus 

 basi ventrosus, supra medium carinatus; apertura rotundato- 

 lunaris; perist. simplex, acutum, rectum. — Diam. maj. 4ys, 

 min. 4, alt. 3^2 mill. (Goll. Metcalf.) 



Stenopns lividus Guild. in Zool. Jonrn. III. p, 528. t. snppl. 27. 

 f. 1—3. 

 — — Sow. Concii. I\lan. f. 'ilR. 



Habitat in insula St. Yinc( nlii. 



§. 12. 



102. H. stolephora Valenciennes. 



T. subobtecte perforata, subdiscoidea, sublaevigata , oblique 

 striata, obtuse angulata, supernc depressa , pallidissime carneo- 

 fulvescens, basi convexa, infra angulum fascia rufa, deorsum pal- 

 lescente , reliculato-striata circumdata; anfr. 4 planiusculi; aper- 

 lura perobliqua, valde depressa; perist. vix incrassatum, margi- 

 nibus callo perforationem fere tegente junctis. — R. a. = 4 : 9. — 

 Diam. maj. 52, min. 40, alt. 20 mill. (Coll. Nr. 56.) 



Helix stolepliora Valenc. in Humb. vov. Zool. II. p. 2 42. t. 56. f. 4'. 



— — Pfr. In Zoitschr. f Mal. 18 44. p. 179. 



— — Chemn. e(d. II. HoHx N. 162. t. 32. f. 1. 2. 



— triiphthalmus (Helicella) Fer. pr. 238. Btill. zool. 183.5. p. 33. 



— Lamarckiana (i Pfr. Syml). 11. p. 10. 



