25 



panso, basalt incrassato, subreflexo, mnbilicum lamina dilatata 



semioccultante . 

 Dlam. maj. 37, min. 31, alt. 18 mill, 

 Hab. Brazils. 



7. Helix monacha, Pfr. (PI. XLIII. fig. 7.) T. imperforata, 

 globoso-conica, solida, rugoso-striata et sub lente minute gra- 

 nulata, castanea ; spira conoideo-elevata, obtusula ; anfr. 5^ 

 modice eonvexi, lente accrescentes, ultimus antice vix descendens, 

 medio obsolete subangulatus ; apertura fere diagonalis, rotun- 

 dato-lunaris, intus livida, nitida ; perist. cai'neum, undique 

 breviter expansum, marginibus remotis, columellari ad inser- 

 tionem in laminam triangularem, adnatam dilatato. 



Diam. maj. 27, min. 23, alt. 19 mill. 

 Hab. Australia. 



8. Helix hystricella, Pfr. T. umbilicata, discoidea, tenui- 

 uscula, subconferte costato-plicata, albido et rufo irregulariter 

 radiata ; spira plana vel medio immersa ; anfr. 6 infra sutu- 

 ram turgidi, ultimus rotundatus, nan descendens ; umbilicus \ 

 diametri occupans ; apertura obliqua, rotundato-lunaris, la' 

 mellis 6 acutis coarctata, — 2 cequalibus in ventre anfr. penul- 

 timi, 4 in margine basali et dextro ; perist. simplex, rectum. 



Diam. maj. 6, min. 5^, alt. 2^ mill. 

 Hab. Sandwich Islands {Dr. Frick). 



9. Helix rejecta, Pfr. (PI. XLIII. fig. 1.) T. umbilicata, 

 depressa, tenuis, striatula, nitida, fusco-cornea ; spira vix elata, 

 vertice subtili, prominulo ; sutura submarginata ; anfr. fere o 

 vix convexiusculi, ultimus latus, depressus, circa mnbilicum 

 angustissimwn vix pallidior ; apertura obliqua, late lunaris ; 

 perist. simplex, rectum, margine columellari superne in lami- 

 nam parvam triangularem refiexo. 



Diam. maj. 12, min. 10, alt. 5 mill. 

 Hab. North of China {Mr. Fortune). 



10. Helix ciliosa, Pfr. (PI. XLIII. fig. 8.) T. umbilicata, 

 depressa, tenuiuscida, carinata, striatula et pilis brevissimis 

 obsita, diafhana, fusca ; spira brevissime conoidea ; anfr. fere 

 6 convexiusculi, lente accrescentes, ultimus carina distinctius 

 ciliata munitus, circa umbilicum latum (| diametri cequantem) 

 subcompresso-injlatus ; apertura fere diagonalis, rotundato- 

 lunaris ; perist. tenue, breviter expansum, marginibus conver- 

 gentibus, columellari superne subdilatato. 



Diam. maj. 10, min. 8^, alt. 4 mill. 

 Hab. North of China {Mr. Fortune). 



11. Helix brevibarbis, Pfr. (PI. XLIII. fig. 4.) T. umbili- 

 cata, subtrochiformis, carinata,tenuiuscula, irregulariter striata 

 et lineis spiralibus confertis decussatula, diaphana, corneo- 

 albida, ad carinam acutam, breviter barbatam castaneo unifas- 



