HAWAIIAN NESOPUPAE. 279 



most at a right angle, and extending to the base of the 

 columella. Type N. waianaensis. 



They are usually found close to the ground in rather damp 

 places on stones, dead leaves, fallen twigs and the like. 



The unidentified Vertigo bacca Pease is like these species in 

 having the last whorl concentrically bisulcate, but nothing 

 is said of palatal folds. The very brief and incomplete de- 

 scription follows. 



"Vertigo bacca Pse. T. cylindracea, abbreviata, tenuius- 

 cula, dextrorsa, perforata, laevigata; apex obtusus; anfr. 4, 

 rotundati, ultimus concentrice bisulcatus; apertura fere cir- 

 cularis, in pariete aperturali bilamellata, columella subuniden- 

 tata ; labrum vix eversum ; pallide fusca. 



"Hab. Kalaparia, insulae Hawaii" (Pease, Proc. Zool. Soc. 

 London, 1871, p. 462). 



No dimensions were given. Subsequent authors have added 

 nothing to the above account. Pease further remarks: "The 

 above description was drawn up several years since from speci- 

 mens collected at Kalapana, district of Puna, Island of Hawaii ; 

 as they have been lost, I furnished the precise locality to en- 

 able collectors to recover the type." 



Key to the Species of Nesopupilla. 



a 1 . Angular lamella extending to outer margin of peristome or 

 united to the outer lip-insertion by a thick callus. 



6 1 . Angular lamella terminating on the parietal wall, 

 united to the lip insertion by a thick callus; only the 

 lower sulcus on the back distinctly impressed. 



N. plicifera, no. 1. 



fr 2 . Angular lamella united to the outer margin of the 



peristome ; two furrows behind the lip clearly defined. 



c 1 . Lower palatal fold accompanied by a short fold 



near its outer end. N. waianaensis, no. 2. 



c 2 . Lower palatal fold not accompanied by a short 



lamella : Spire tapering near the summit. 



d l . Whorls weakly convex; length of shell 



more than 1.7 mm. N. litoralis, no. 3. 



