328 HELIX §. 61. 62. 



acuta, sursum refloxiuscula instructus, subtus convexo-depressus; 

 apertura sublanceolata, anterius acuta^ basi rotundata, subreflexa, 

 versus umbilicum oblique rectiuscula. — Diam, i 5, alt. 1 mill. (G.j 

 Helix hyalina Le Guill. in Revue zool. 1842. p. 139. Nec Fer. 

 — reflexiuscula Pfr. Symb. II, p. 98. 

 Habitat in insulis Salomon. 



859. H. Tritoniensis Le Guillou. -f M //.mhs.Ji^S^, 



T. trocboidea, subumbilicata, albido-fulva , subVtnata;' arifr, /' 

 5 — 6 convexiusculi , ultimus rotundatus , subtus convexus ; spira 

 conico-depressa; apertura angusta; labrum subreflexum; umbili- 

 cus minimus, punctiformis. — Diam. 9, alt. 7^2 mill. (G.) 

 Helix Tritoniensis Le Guill. in Revue zool. 18 42. p. 138. 

 Ilabitat in Nova Guinea, ad Triton-Bay. 



860. H. albula Le Guillou. '^/>^^P-2J<)J^^^.XfZm, ' 



T. discoidea, albula, umbilicata, acute carinata,"supra conico-' ' 

 depressa, subacuta, tenuiter striata, subtus depresso-convexa, 

 crebre striata; anfr. 5/4 depresso - convexi , ultimus carinatus: 

 carina rufescente; apertura suboblonga, anterius acuta, basi de- 

 presso-recta; perist. superne subreflexum, subtus et anterius 

 lamina lata, reflexa, acuta; umbilicus profundus , infundibulifor- 

 mis. — Diam. 27, alt. 16 mifl. (G.) 



Helix alhula Le Guill. in Revue zool. 18 42. p. 139. 

 Habitat in insula Ternate. 



861. H. ternatana Le Guillou. -^^/^f/fj^r^^^/^/^- 



T. orbiculato-subconoidea, umbilicata, rufa, tenuiter striata; *" 

 anfr. 7 subcjonvexi, ultimus margine carinatus: carina albida; in- 

 fima facies depresso-convexiuscula; umbilicus profundus, margine 

 efFuso; spira conico-depressa , obtusa; apertura obliqua, subqua- 

 drata , marginata , alba , subreflexa , basi incrassata. — Diam. 22, 

 aU. 12 mill. (G.) 



Helix Ternatana Le Gitill. in Revue zool. 18 42. p. 138. 

 Habitat in insula Ternate, 



§. 62. 

 862. H. Ghiesbreghti Nyst. , 



T. umbilicata, orbiculato-convexa , striata, epidermide piIos&'' 

 induta, brunnea, zonis nigricantibus et luteis ornata; anfr. 

 5/2 convexiusculi , ultimus magnus, rotundatus, circa umbilicum 

 mediocrem subcompressus; apertura lunato-rotundata ; perist. ex- 

 pansum, album, breviter reflexum, marginibus conniventibus. 



