— 143 — 



rotundato; sutura profunde impressa; anfractus 6 pla- 

 niusculi^ embryonales primi 2 1/2 lœvigati, cornet, ulti- 

 mus ad suturam spiraliter trisiilcatus, paulo infra peri- 

 pheriam fusco cingulatus, spiram subœquans, hasi rotun- 

 datus ; apertura vix obliqua, angulato-ovata, intus albida, 

 zona anfractus ultimi transmeante; peristoma simplex, 

 albidum, marginibus callo tenui, parum conspicuo junctis, 

 cohimellari expansiusculo, basali et externo subacutis ; 

 umbilicus carina funiculiformi, albida circumscriptus. 

 — Operculum? Long. 6, diam. maj. 3 5/3 mill. (Coll. Des- 

 mazures.) 

 Habitat, in insula Rodriguez dicta. (A. Desmazures.) 



13. Omphalotropis littorindla, Crosse. 



T. perforata, elongato-conica^ solidula, liris confertis, 

 subœqualibus spiraliter sculpta, parum nilens, fascescens, 

 albido minute et obscure variegata; spira elongato-conica, 

 apice obtusulo; sutura impressa; anfractus 6 vix con- 

 vexiusculi, embryonales primi 2 nitiduli, lœvigati, viola- 

 ceo-fusci, ultimus spira paulo minor, basi rotundatus ; 

 apertura subverticalis, angulato-ovata, intus concolor; 

 peristoma simplex, fuscescens, marginibus callo tenui 

 junctis, columellari expansiusculo, basali et externo sub- 

 acutis; umbilicus carina funiculiformi, sordide albida 

 circumscriptus. — Operculum? — Long. 1, diam. maj. 

 3 \i%mill. (Coll. Desmazures.) 

 Habitat in insula Rodriguez dicta. (A. Desmazures.) 

 Obs. Species 0. multiliralœ Pfeifferi et 0. costellatœ 

 Adamsi sat vicina, sed gi'acilior et litHs confertis, sub- 

 œqualibus distinguenda. 



14, Omphalotropis Hameliana, Crosse. 



T. perforata, elongato-conica, tenuiusculu, parum nitens, 



