102 



umbilicata ; anfr. 5 convexiusculis. Apertura transversa, anguste 

 lunaris, columella verticalis. Axis ^ ; diam. ^ poll. 



Inhabits Hakpdadi, among dead leaves, in woods. W. S. 



Very nearly allied to If. misella. 



Helix pupula. T. minuta, ovato-conica, levis, succinea, 

 infra convexa, indentata ; anfr. 6-j- tabulatis, ad peripheriam ob- 

 tuse angulatis. Apertura transversa, lunata ; labro simplici, colu- 

 mella recta, reflexa. Axis ad J- poll. 



Among dead leaves in woods, Hakodadi (Isl. Jesso). W. S. 



Very much like our chersina, or the European fulva. 



Helix pauper. T. parva, discoidea, rufo-cornea, striis in- 

 crement! costulata, subtus calyculata ; anfr. 4j convexiusculis ; 

 sutura profunda. Apertura perobliqua, prona, rotundata ; peris- 

 tomate simplici. Diam. T 3 g- ; axis £ poll. On dead wood in thick- 

 ets, Petropaulski, Kamtschatka, also Hakodadi (Isl. Jesso). W. S. 



Allied to H. rotundata and perspective. Probably the same 

 noted by Middendorff as H. ruderata of Europe. 



Helix operculina. Testa tenuis, depressissima, rufo-cornea ; 

 anfr. 5 concavo-convexis, ad peripheriam acutissime carinatis, 

 marginatis ; subtus concava deinde convexa. Apertura angustis- 

 sima, sigmoidea, peristomate vix reflexo. Axis T ^ ; diam. T \ poll. 



Inhabits Peel Isl. (Bonin Is.) Mr. Wright. 



An exceedingly depressed species, looking much like the oper- 

 cle of some Trochus. 



Helix squarrosa. Testa planorboidea, squarrosa, oehra- 

 ceo-cornea, subtus pallidior, convexa, late umbilicata; anfr. G con- 

 vexiusculis, ad peripheriam subangulatis. Apertura parva, an- 

 gusta, lunata ; peristomate simplici, ad columellam reflexo. 



Diam. T 6 p ; axis T 3 poll, (probably immature.) 



Ousima (Japan), among stones on hill sides. W. S. 



Well distinguished by its large deep umbilicus, ochreous color, 

 and rough, scaly surface. Allied to Skanghaiensis. 



Nanina pisolina. Testa fragilis, vitrea, levis, mellita, orbic- 

 ularis, subtus convexior, imperforata ; anfr. 8J depressis, ad 

 peripheriam rotundatis. Apertura lunata, labro ubique simplici. 



