Xesta perfragilis Mlldff. n. sp. 
T. rimato-perforata, depresso-globosa, tenuissima, 
pellueida, subtiliter plicato-striatula, lineis spiralibus parum 
impressis sat distantibus sculpta, subopaca, lutescens, 
taeniola fulva interdum evanida ornata. Spira breviter 
conoidea lateribus substrietis. Anfr. 4°/a convexiuseuli, 
ultimus bene convexus, supra peripheriam vix subangulatus. 
Apert. modice obliqua, ampla, subeircularis; peristoma 
rectum, obtusulum, margo columellaris breviter sed valde 
reflexus. 
Diam. 30, alt: 19, apert.-lat. 17, long: 16, alt. 14 mm. 
Kaledupa. 
Xesta tomiana Rolle n. sp. 
T. peranguste perforata, subeonoideo-depressa, tenuis, 
pellucens, subtilissime plicato-striata, nitens, sulfurea, taeniis 
suturali angusta, altera peripherica sat lata, opaecis albidis 
pieta, aut alba taenia castanea lata supraperipherica 
ornata. Spira modice conoidea lateribus substrictis. An- 
fractus 5 convexiuseuli, regulariter accrescentes, sutura 
anguste marginata disjuncti, ultimus ad peripheriam distincte 
angulatus. Apertura modice obliqua, late elliptica, sat 
excisa; peristoma rectum obtusulum, margine columellari 
breviter reflexo. 
Diam. 29,1, alt. 17,7, apert. lat. 16,4, long. 14,5, alt. 12,5 mm. 
Insel Tomia. 
Hemiplecta subsulcata Rolle n. sp. 
T. rimato-perforata, depresso-conoidea, solidula, sat 
distincte plicato-striata, lineis spiralibus sat distantibus 
subirregularibus et rugis confertis oblique antrorsum decur- 
rentibus sculpta, sericina, pallide olivacea, taeniis 2 brunneis 
antrorsum evanescentibus picta, aut olivaceo-brunnea, zona 
supraperipherica pallida ornata. Spira sat elevata lateribus 
strietis, apice acutulo.. Anfr. 5°s convexiuseuli, sutura 
au 
PP 
