466 Mr. A. Adams on the Species of 



perforata, tenui, rufo-fusca, oblique striata ; epidermide in lineis 

 elevatis radiantibus disposita, ad peripberiam in ciliis modicis pro- 

 ducta; anfract. 6, plauis, ultimo ad peripberiam acute angulato, 

 basi convexo ; apertura obliqua, lunata ; peristomate recto, acuto. 

 Lat. 6 lin., alt. 3 lin. 



Hab. Sado, Awa-Sima. 



Most like H. ciliosa, Pfr. ; but the outline is more conical, 

 and the epidermis at the periphery is developed into longer 

 hair-like projections than in that species. 



34. Helix [Plectotropis) trochula^ A. Ad. 



H. testa orbiculato-conica ; spira elata, umbnico lato et profundo 

 perforata, tenui, rufo-fusca ; epidermide in lineis obliquis inter- 

 ruptis disposita, ad peripberiam in cihis brevibus producta ; an- 

 fract. 6, planis, ultimo ad peripberiam acute angulato, basi con- 

 vexo ; apertura obliqua, lunata; peristomate acuto, expanso, 

 breviter reflexo. 



Lat, 6| lin., alt. 4 lin. 

 Hah. Tsus-Sima. 

 A larger and more conoidal species than H. setocincta, and 



with the epidermis forming raised, radiating, but interrupted 



lines, and with the ciliary fringe at the periphery much 



shorter. 



35. Helix {Plectotropis) scabricula^ A. Ad. 



H. testa orbiculato-conoidali, late umbilicata, ochraceo-cornea, squar- 

 rosa ; spira depresso-conica ; anfract. 6|^, convexiusculis, ad peri- 

 pberiam subangulatis ; epidermide in squamulis elongatis, ra- 

 diatim dispositis producta ; apertura parva, angusta, lunata ; 

 peristomate breviter reflexo. 



Lat. 4i lin., alt. 3 lin. 

 Hah. Awa-Sima. 



Of the same form and with the same rough scaly surface as 

 H. squarrosa^ only smaller and with a more elevated spire 

 and narrower umbilicus. 



36. Helix [Patula) paupera^ Gould. 

 Hah. Matsumai, Hakodadi, Olga Bay. 



37. Helix {Patula) elatior^ A. Ad. 

 H. testa orbiculato-conica, obhque costulata, late umbilicata ; spira 



conica, elatiuscula; anfract. 4|, planis, ad suturas marginatis, vl- 



timo ad peripberiam acute carinato ; apertura perobliqua, rotun- 



dato-lunata ; peristomate simpHci, acuto. 

 Lat. 3i lin., alt. 2 lin. 



Hah. Dagelet Island. 



A larger and more conical species than H. panpcra^ (lould, 



