38 IIELIX §. 19. 



229. H. laeta Pfr. 



T. angustissime sed pervie umbilicala, sublurbinaUi, soli- 

 diuscula, striolis irregularibus obliquis subgranulata, parum 

 nitens, lutescenti-alabastrina; spira conoidea, apice aculiuscula; 

 sutura marginata; anfr. 6 vix coirvexiusculi, lente accrescentes, 

 ultimus non descendens, subacute ruguloso-carinatus, basi in- 

 flatus; apertura parum obliqua, angulato-lunaris, inlus margari- 

 tacea; perist. rectum, obtusum, marginibus remotis, columellari 

 superne in laminam brevem triangularem dilalato. — Diam. 

 maj. 35, min. 29, alt. 18 mill. (Mus. Cuming.) 



Helix laeta Pfr. in Proc. Zool. Soc. 1854. p. 287. 

 — — Reeve Conch. ic. n. U80. t. 196. 



Natiina laeta (Hemiplecta) Pfr. Vers. p. 120. 



Habitat . . .? 



*- 



230. semidecussata Pfr. (Coll. 93. — Pioc. I85i. 



p. 232, — Rv. n. 567. t. 102. — Ch. ed. nov. II!. 

 p. 404. — Nanina semidecussata Gray Cat. Pulin. 

 p. 89. — Hemiplecla Pfr. Vers. p. 120.) - Moii.III. p. 5.3. 



231. Owcniana Pfr. (Proc. 1853. p. 49. — Diam. 



maj. 32—40, niin. aeyj— 32 , alt. 17 20 mili. — 

 //. Oivenii Rv. n. 1013. t. 155. — Nanina Owe- 

 niana Gray Cat. Pulm. p. 101. — Hemiplecta 

 Pfr. Vers. p. 120.) - - - 628. 



232. H. Eucharis Dcshaycs. 



T. perforata, conoidea, tenuis, superne arcuato-striala et 

 slriis spiralibus subgranulato-decussata , parum nitens, pallide 

 virens; spira subconcavo-conoidea, obtusula; anfr. By^ sub- 

 plani, sensim accrescentes, ultimus latior, non descendens, 

 peripheria compresse carinatus, basi convexus, nitidus; aper- 

 lura magna, obliqua, angulato-lunaris; perist. simplex, rectum, 

 margine columellari subverticali, superne brevitcr fornicalo- 

 reflexo. — Diam. maj. 28, min. 24, alt. 16 mill. (Mus. Cuming.) 

 Helix Eucharis Desh. in Fer. Hist. t. 64A. f. 7. 8. 



_ _ p/)v Mon. Hel. m. p. 54. n. 158. 



Nanina Eucharis Graij Cat. Pulm. p. 139. 



— — (Hemiplecta) Pfr. Vers. p. 12 0. 



Ilabitat . . . ? 



233 H. Shiplayi Pfr. 



T. perforata, subturbinata, solidula, supernc arcuato-plicata 

 striisque spiralibus eleganter granulata, isabellina; spira con- 

 vexiusculo-conica, obtusula; sutura subcanaliculata; anfr. 6 con- 

 vexi; lente accrcsccntes, ultimus peripheria carina acuta, com- 

 pressa, antice evanescente munitus, basi convexus, laevior; 



