56 



20, C. psilomitum Pfr. (137.) — T. umbilicata, 

 depresso-conoidea, solidula, virenti-lutea, vix nitidula, li- 

 neis spiralihns subtilissimis fi!oso-elevatis crebris obs- 

 curioribus cincla; spira breviter conoidea, obtusa; sutura 

 subcanalicubita; anfr. 4 convexi, ultimus teres, non de- 

 RcenHens; umbilicus mediocris, profundus; apertura fere 

 verticalis, subcircularis, intusalbida; perist. simplex, acu- 

 tum, marginibus fere contiguis, callo brevi junctis. — 

 Diam. maj. 15, nnn. II, alt. 8 mill. Ap. 7 mill. longa, 



21, C. ponderosum Pfr. (139.) — T. late umbi- 

 licata , conoideo-depressa , crassa , ponderosa, subtiliter & 

 obliqiie nialleato-rugulosa, olivaceo-fuscula; spira breviter 

 conoidea, obtusa ; anfr. 5 parum convexi, celeriter accres- 

 centes, ultimus lalus, subdepressus, ad peripheriam obtuse 

 funiculato-carinatus; apertura obliqua, angulato- ovalis, 

 intus alba, nilida; perist. crassum, rectum, subcontinuumi 

 superne angulato- dilatatum, margine columellari perar- 

 cuato, — Diam. maj. 36, min. 30, alt, 20 mill. 



22. C. Dysoni Pfr. (141.) — T. umbilicata, conoi- 

 deo-orbiculata, solida, pliculis confertis undulatis, subcon- 

 fluentibus sculpta, fusco-olivarea, pallidius strigata & ob- 

 solete fasciata; spira conoidea, obtusula; anfr. 4V2 con- 

 vexiusculi, celeriter accrescentes, ultimus rotundatus; um- 

 bilicus mediocris , conicus; apertura fere verticalis, angu- 

 lato-subcircularis , intus coerulescens, nitida; perist. sim- 

 plex, rectum, supernc angulatum, breviter adnatum, mar- 

 gine dextro declivi, columellari subdilatato - patente. — 

 Diam. maj. 27, min. 22, alt. 16 mill. \\). 14 mill. longa, 

 13 lata. 



23. C. disculus Pfr. (144.) — T. umbilicata, de- 

 pressa, discoidea, solidiuscula, nitida, alabastiina; spira 

 planissima; anfr. vix 4 convexiusculi, ad suinram im- 

 pressam striati, ulfimus teretiusculus, subdepressu.s , io 

 umbilico lato distinciius striatus, antice brevissime solu. 



