HELIX §. 21. 55 



315. H. corylus Reeve. -f 



«II. testa vix umbilicata, convexo-depressa, infra conca- 

 viuscula, olivaceo-castanea , subcornea, dense subtiliter costel- 

 lato-striata ; spira obtusa, sutura impressa; anfr. 5; apertura 

 late lunari, labro simplici. » (Rv.) — Diam. max. 16, alt. 10 mill. 

 (Ex ic. specim. Mus. Taylor.) 



Helix corylus Reeve Gonch. icon. n. 1439. t. 204. 

 llabitat in insula Ceylon (Dr. Gardner). 



316. laevigata Raf. (Coll. 123. — Rv. n. 672. t. ti6. 

 — Hyalina Pfr. Vers. p. 123. — H. lucubrata 

 Binn. Terr. Moll. II. p. 225. t. 32. Nec Say. — 

 Helicella laevigata Ad. Gen. p. 118.) Mon. 111. p. 67. 



317. H. subopaca Pfr. 



T. semiobtecte perforata , conoideo-depressa , solidula, 

 superne subarcuatim costulata, basi radiato-slriata , subopaca, 

 paliide rubello-cornea; spira breviter conoidea; sutura simplex, 

 impressa; anfr. 6^^ vix convexiusculi, ultimus non descendens, 

 basi planiusculus; aperlura obliqua, lunaris, intus margaritacea; 

 perist. simplex, rectum, margine columellari declivi, subincras- 

 sato, ad perforationem triangulatim dilatato. — Diam. maj. 17, 

 rain. I4V2, alt. 9 mill. (Mus. Guming.) 



Helix subopaca Pfr. in Proc. Zool. Soc. 1853. p. 12 3. 



— — Reeve Conch. ic. n. 1302. t. 187. 

 Nanina subopaca (Rhyssota) Pfr. Vers. p. 121. 



Ilabitat in insula Ceylon (Thwaites). 



318. H. partita Pfr. 



T. perforata, convexo-depressa, solidula, superne confer- 

 tissime et inaequaliter subarcuato-costulata, sericina , fulvo- 

 cornea; spira magis minusve elevala, vertice subtili, prominulo; 

 sutura levis ; anfr. Sy^ convexiusculi , sensini accrescentes, 

 ultimus vix latior, non descendens, basi laeviusculus, sub- 

 planulatus; apertura parum obliqua, lunaris; perist. simplex, 

 rectum , marginibus vix convergentibus , columellari declivi, 

 ad perforationem subincrassato, reflexiusculo. — Diam. maj. 13, 

 min. IIV2, alt. 7 mill. (Mus. Cuming.) 



Helix partita Pfr. in Proc. Zool. Soc. 1853. p. 123. 



— — Reeve Conch. ic. n. 1311. t. 188. 

 Nanina partita (Rhyssota) Pfr. Vers. p. 121. 



^. Major, tenuior, pallide cornea; diani. maj. 15, min. 13, all. 7^3 mill. 



Ilabitat in insula Ceylon (Layard, ^ Thwaites). 



Obs. Differt ab H. subopaca sculptura subtiliore , niinus regulari, 

 anfractu ullimo minus dilatato, etc. An sequenti niniis affinis? 



