56 IIELIX §. 21. 



310. H. marcida Benson. 4* 



«T. subobtecte pcrforata, depressa, solida, superne ob- 

 lique regulariter costulata , subtus laeviori , sub epidermidc 

 fulvido-cornea albida; spira vix elevata, sutura impressa, apice 

 obtusiusculo ; anfr. 6 lente accrescentibus , ultimo rotundato, 

 subtus planulato; apcrtura sublate lunata, obliqua; perist. recto, 

 tonui, margine columellari oblique descendente, crassiusculo, 

 superne breviter reflexo, perforationem subtegente. — Diam. 

 niaj. 14, min. 12, axis 8 mill.» (B.) 



Helix marcida Bens. in Ann. and Mag. 2d. ser. XII. p. 92. 



Nec Shuttl. 1852. 



Ilabitat in insula Ceylon (Layard). 



320. H. euclasta Shuttleworth. 



T. angustissime umbilicata, convexo-depressa, tenuis, con- 

 fertim capillaceo-striata, sericea, fusco-cornea ; spira paruin 

 elevata, verlice subtili; sutura impressa; aufr. 4 vix convexius- 

 culi, sensim accrescentes, ultimus non descendens, rotundalus, 

 peripheria obsolete angulatus, circa perforationem subexcavatus; 

 apertura parum obliqua , late lunaris; perist. simplex, rectuni, 

 marginibus distantibus, columellari declivi, superne dilatato, pa- 

 lente. — Diam. maj. I2V2, min. 11, alt. 6 miU. (Coll. Nr. 124.) 



Helix euclasta Shuttl. Diagn. n. Moll. Nr. 6. p. 130. 



— — Reeve Conch. ic. n. 132.3. t. 189. 



— — (Patula) Pfr. Vers. p. 125. 



— Swifti Pfr. in Proc. Zool. Soc. 1854. p. 51. 

 I^. Spira paullo m.'igis elevata. 



Ilabitat in insulis St. Thomas et Cuba, var. ^ in Portorico. 



32L H. subconoidca Pfr. 



T. angustissime perforala, depressa, tenuis, fragilis, supcrne 

 distincte costulata, pellucida, cornea; spira brevissime conoidea, 

 vertice obtuso; anfr. 5 convexiusculi, lente accrescentes, ultimus 

 non descendcns, supra mcdium subangulatus, basi modice con- 

 vexus, distanter radiato-striolatus; apertura parum obliqua, lu- 

 naris; pcrist. simplex, rectum, marginibus vix convergentibus, 

 columellari leviter arcuato, ad perforationem vix reflexiusculo. — 

 Diam. maj. 10%, min. d%, alt- ^Vi i»'ll- (Mus. Cuming.) 



Helix siibconoidea Pfr. in Proc. Zool. Soc. 1854. p. 51. 



— _ neeve Conch. ic. n. 1320. t. i89. 

 _ _ (Patula) Pfr. Vers. p. 12 5. 



Ilabitiit in insula Ceylon (Thwaites). 



