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tularum intervallo striis subtilibus transversim impresso, 

 ultitna coslula infra médium carinam formante) , lamellis 

 longitudinalibus, prominulis, compressis, albis, pone mar- 

 ginem externum, sicut in génère Acroptychia (Euptychia, 

 Crosse et Fischer, olim), elegantissime ornatus ; apertura 

 subcircularis, inlas alba; peristomabrevissime expansum, 

 subreflexum, album, in vicinio anfractus penultimi vix 

 subangulatum, marginibus callo tenuijunctis, columellari 

 vix expanso, versus basin subdilatato, basali et externo re- 

 flexiusculis. 



Operculum rotundaltim, tenuissimum 7 corneum, spi- 

 ratum, supra polygyratum, infra minus conspicue spira- 

 tum, nucleo centrali, concaviusculo. 



Animal? 



Forma conchyliologica insignis, Leptopomala tenuitale 

 testœ et operculo commemorans, lamellis elegantissimis 

 anfractus ultimi generi nostro Acroptychiœ valde vicina 

 sed operculo longe discrepans. Operculo et colore Cyclo- 

 phorus foliaceus Chemnitzi sat vicinus, sed differt testa in- 

 crassata et anfractu ultimo descendente. 



\ . Leucoptychia Tissotiana , Crosse. 



T. anguste sed profunde umbilicata, globoso-lurbinata, 

 tenuis, translucida, parum nitens, longitudinaliter subo- 

 blique striata, transversim funiculato-costulata, carneo- 

 albida aut rubro-albida, apice saturatiore, fulvide rubro; 

 spira turbinato-conica, apice obtusulo; sutura subimpressa ; 

 anfractus o 1/2 convexiusculi, sat rapide accrescentes, 

 embryonales lirati, fulvidi aut fulvide rubri, sequentes 

 transversim funiculato-costulati, palliée fulvidi, ultimus 

 sat magnus, spiram paulo superans (:: 7 : 6), transversim 

 cos tula tus {cos tularum intervallo striis spiralibus, subtilis- 

 simis impresso, et ultima coslula infra médium carinam 



