171 



Helix pusillus. Testa minuta, tenuis, depressa ; supra ob- 

 lique striata, albido-virens ; infra viridior, sub-polita, perforata : 

 spira anfr. 4 sub-planulatis ; sutura profunda : apertura circu- 

 laris ; labro simplici. Long, /j, lat. ^^j poll. Hnb. Mountains 

 of Maui, Sandwich Islands. 



Scarcely to be distinguished from H. electrina^ Gould, in size 

 and form, but it is more coarsely striated. It is also like H. spi- 

 rillus^ but has a much smaller umbilicus. 



Helix saxatilis (Couthouy MS). Testa parva, sub-globosa, 

 lucida, virldis, infra convexa, umbilico modico perforata, leviter 

 striata : spira anfr. vix 4 cylindricis, cito crescentibus ; sutura ca- 

 naliculata : apertura sub-orbicularis, ampla ; labro simplici, fere 

 continuo. Alt. y'^, lat. J poll. Hah. Terra del Fuego. 



Resembles, in general, H. lucida^ and is remarkable for its 

 globular form and fresh green color. 



Helix ex.equata. T. parva, discoidea, tenuis, lucida, gla- 

 brata, succineo-cornea, ad peripheriam rotundata, infra sub-plana, 

 in foveam centralem devexa : spira anfr. 7 arete volutis, supra 

 planulatis, sutura marginata bene impressa discrelis, spiram pla- 

 nam efformantibus : apertura angusta, transversa ; labro simplici, 

 portione sinistra fere horizontali, recedente, subreflexa. Lat. /q, 

 alt. ^%. Hah. Kauai, Sandwich Islands. 



A very beautiful and polished symmetrical shell ; beneath like 

 H. interna and indenlata. 



Helix cicercula. T. depresso-globosa, tenuis, sub-opaca, im- 

 perforata, albido-virescens, striis incrementi conspicuis et striis 

 volventibus sparsis insculpta : infra rotundata, fovea centrali 

 modica : spira anfr. 5 convexis, ultimo angulato : apertura lu- 

 nata ; labro simplici; columella superne vix reflexa. Lai. |-, 

 alt. -^^ poll. Hah. Mountains of Hawaii. 



Distinguished from the other small subglobular shells here 

 mentioned by its pea-green color and more globular shape, both 

 above and beneath, its deeper umbilical pit, and by having no 

 semblance of contortion of the colun)ella. 



Helix CRyPTOPORTiCA. Testa parva, orbiculari-depressa, ad 

 apicem acuta, tenuis, pellucida, nitida, luteo-viresccns, leviter 

 striata : infra rotundata, imperforata, fovea parva centrali : spira 

 anfr. 5J convexiusculis, ultimo carinato ; sutura impressa, mar- 



