188 
HELIX §. 36. 37. 
483. H, jugosa Mighcls. 
T. late et profunde umbilicata, depressa, subdiscoidea , ru- 
bescenli-brunnea; anfr. o convexi, striis incrementi numerosis, 
elevatis; apertura circularis, modificata anfractu penultimo cum 
lamina tenui, elevata, intrante; labrum simj)lex, tenue. — Diam. 
V- (M.) 
Helix jugosa Migh. in Bost. Pioc. t845. p. 19. 
Habitat in insula Sandwich. : Waioli. 
^^^^484. H- bilamcllata Pft*. 
T. umbilicata, conica, tenuis, cornea, longitudinaliter valide 
et regulariter plicata; spira elongata, sursum valde attenuata, 
acuta; anfr. 9 carinati (carina exserta, acuta, subaculeata),- ulti- 
mus basi convexiusculus; umbilicus angustus, pervius; apertura 
sub verticalis, subquadrangularis, lamellis '2 coarctala; altera in- 
trante in pariete aperlurali, altera crassiore ad columellam; perist. 
simplex, rectum. — Diam. maj. 4, min. sys, ait. 472 niill. (Coli. 
Nr. 282.) 
Helix hilamellata Pfr. in Zeitschr. f. Mal. 1845. p. 84. 
— — Chewn. ed. II. Helix t. 1 0 1 . f. 16—18. 
Habitat in insula Opara (Cuming). 
§. 37. 
^ 485. H. obtecta Lowc. 
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; umbilicus mediocris, pervius; aper- 
tura subcircularis; perist. continuum, vix expansum, intus sub- 
incrassatum. — Diam. maj. 10, min. 9, ait. 5 mill. (Culi. Nr. 283.) 
Helix oblecla Lowe Faun. Mader. p. 47. t. 5. f. 20 . 
— — Chemn. ed. H. Ilclix N. 577. t. 9 I. f. 1 9 — 2 I . 
fi. Minor, anfr. i'A, primis non immersis, umbilico angustiore: diam. 
maj. 7, min. 6 / 4 , ait. SjA niill. 
Habitat in insula Portosancto et llheo de Baxo. 
/ 486- H. abjecta Lowe. 
T. perforata, globoso-conica, superne rugoso-striata, undique 
minute granuiata, solida, riidiuscula, grisea, basi obsolete fusco- 
unifosciala; spira elata; anfr. 6/2 — 7 convexi, ultimus subcarina- 
tus, basi convexiusculus, antice subito deflexus; apertura perobli- 
qua, circularis, intus fusciila; perforatio punctiformis ; perist. 
