237 
1646a. Helix acmella Pfr. 
T. subobtecte perforata, turbinata, solidula, laevigata, 
nitida, lutea, sursum pallidior; spira regulariter turbinata, 
vertice minutissimo, acuto; anfr. 6 convexi, ultimus non 
descendens, basi planior; apertura diagonalis, sub-quadran- 
gulari-ovalis; perist. album, reflexum, margine dextro sub- 
flexuoso, columellari longe adnato, umbilicum canaliformem 
fingente. — Diam. maj. 26, min. 22, alt. 25 mill. 
Hab. in insulis Admiralitatıs. 
1812a. Helix Eutropis Shuttleworth 
in Mus. Cuming. 
T. umbilicata, lenticularis, solida, plicis validis obliquis 
utrinque sculpta, griseo-virens; spira breviter conoidea; 
sutura late carinato-marginata, crenata; anfr. 51/,, superi 
vix convexiusculi, ultimus peripheria acute filocarinatus, 
superne convexior, bası inflatus; umbilicus mediocris, vix 
pervius; apertura perobliqua, rotundato-lunaris, ad carinam 
subangulata; perist. vix callosum, marginibus approxima- 
tis, dextro expansiusculo, basali reflexo. — Diam. maj. 14, 
min. 12, alt. 7 mill. 
Habitat... 7 
1531a.., Helix Isis, Pfr. 
T. umbilicata, depressa, solidula, striatula, unicolor 
castanea; spira vix elevata; anfr. 5 vix convexiusculi, sen- 
sim accrescentes, ultimus antice subdeflexus, peripheria 
obsoletissime angulatus, subtus convexior; apertura obliqua, 
late lunaris, intus submargaritacea; perist. album, margini- 
bus vix convergentibus, supero subhorizontali, expanso, 
basalı late reflexo, ad insertionem breviter ascendente, um- 
bilicum mediocrem lamina dilatata semioccultante. — Diam. 
maj. 45, min. 38, alt. 19 mill, 
Hab. in insulis Admiralitatis, 
1852a. Helix hetaera Pfr. 
T. mediocriter umbilicata, conoideo-depressa, tenuiuscula, 
