188 HELIX §. 36. 37. 



483. H. ^usosA Mishels.(:^.S-^t^^i^r4^^p0^r 



T. late et profund^ urabilicata, depressa, subdiscoidea, ru^ 

 bescenti-brunnea; anfr. S convexi, striis incrementi numerosis, 

 elevatis; apertura circularis , modificata anfractu penultitno cum 

 lamina tenui, elevata, intrante^Jabrum simplex, tenue. — Diam. 

 >". (M.) 



Helix jugosa Migh. in Bost. Proc. 18 43. p. 19. 

 Habitat in insula Sandwich. : Waioli. 



484. H. bilamellata Pfr. 



T. umbilicata, conica, tenuis, cornea , longitudinaliter valide 

 et regulariter plicata; spira elongata, sursum valde attenuata, 

 acuta; anfr. 9 cariuati (carina exserta. acuta , subaculeata ), ulti- 

 mus basi convexiusculus ; umbilicus angustus, pervius; apertura 

 subverticalis, subquadrangularis, lamellis 2 coarctata: altera in- 

 trante in pariete aperturali, altera crassiore ad columellam; perist. 

 simplex, rectum. — Diam. maj. 4, min. 373, alt. Vf-i mill. (Coll. 

 Nr. 282.) 



Helix bilamellata Pfr. in Zeitschr. f. Mal. 1845. p. 84. 

 — — Chenm. ed. II. Helix t. 1 1 . f. 16 — 18. 



Habitat in insula Opara (Cuming). 



§• 37. 



485. H. obtecta Lowe. 



T. umbilicata, depressa, superne planiuscula, basi convexa, 

 solidiuscula , eroso-scrobiculata , subgranulata, sordide alba; anfr. 

 5 convexi, primi immersi, sequentes turgidi, ultimus superne 

 angulatus, antice deflexus; umbiiicus mediocris, pervius; aper- 

 tura subcircularis; perist. continuum, vix expansum, intus sub- 

 incrassatum. — Diam. maj. 10, min. 9, alt. 5 mill. (Coll. Nr. 283.) 

 Helix obtecta Lowe Faun. Mader. p. 47. t. 3. f. 20. 

 '/.->?..■ — — Chemn. ed. H. Helix N. 577. t. 9 1. f. 19 — 21. 



/9. Minor, anfr. 4/^2; primis non immersis , umbilico angusliore : diam. 



maj. 7, min. 6 '/4; alt. 3/4 mill. 

 Habitat in insula Portosancto et llheo de Baxo. 



486. H. abjecta l'OweJ//./^jyS',:l;;(^.^'l,,,y,ol/^. 



T. perforata, globoso-conica, superne rugos'o-striaia,"tniaique 

 minute granulata, solida, rudiuscula, grisea, basi obsolele fusco- 

 unifasciata; spira elata; anfr. 6/2 — 7 convexi, ultimus subcarina- 

 tus, basi convexiusculus, antice subilo deflexus; apertura perobli- 

 qua, circularis, intus fuscula; perforatio punctiformis; perist. 



