478 REV. ET MAG. DE ZOOLOGY. (Decembre 1862.) 



Diam. maj. 15, min. 12, altit. 6 mill. 



H. Saigon. 



LIMN^EA SPADICEA. Testa subrimata, ovato-elongata, 

 tenuis, subdiaphana, irregulariter striatula, parum nitens, 

 pallide castanea ; spira acuta, brevis ; anfr. 4 convexius- 

 culi, sutura sat profunda juncti, ultimus permagnus, spirae 

 fere duplo major; columella in lineam spiralem laxam 

 torta ; apertura ovalis, superne angularis, marginibus 

 simplicibus, acutis, rectis, columellari in laminam tenuem 

 appressam, rimam fingenlem, dilatato. 



Longit. 19, diam. 8 mill. 



Hab. cum praecedente. 



CYCLOSTOMA LYCHNUS. Testa late et perspective um- 

 bilicata, depresso-turbinata, solida, irregulariter striatula, 

 castanea, fulvo-variegata et infra peripheriam fusco-uni- 

 fasciata; spira turbinata, apice obtusula, violacea ; anfr. 

 51/2convexi, sutura simplici, demum marginata juncti, 

 ultimus depressus,basiplanulatus, circa umbilicum excen- 

 trice carinatus; apertura obliqua, subcircularis ; peri- 

 stoma duplex : internum continuum, rectum, pallidum : 

 externum subincrassatum, patens, nigricans, superne in 

 rostrum triangularem, canaliculatum, affixum, desinens. 

 Operculum extus planum, lamellosum, multispirale, 

 castaneo-nigricans. 



Diam. maj. 36, min. 29, altit. 25 mill. 



Hab. in insula Poulo-Condor. 



HYDROCENA FASCIOLATA. Testa minute perforata, 

 ovato-conica, solidula, sublsevigata, parum nitens, cor- 

 nea, rubigineo-strigata et obscure fasciata ; spira conica, 

 apice acuminata ; anfr. 8 planulati, sutura marginata 

 juncti, ultimus spiram a3quans, ventrosus, circa perfora- 

 tionem punctiformem filo-carinatus et distincte fasciatus; 

 apertura obliqua, angulato-ovalis, basi subcanalicu- 

 lata ; peristoma simplex, margine dextro recto, columel- 

 lari strictim dilatato, patente. 



Longit. 10, diam. 5 mill. 



Hab. Bangkok. 



