119 



81. C. unifasciatum. (pi. xxvi. f. 105. 106.) nob. 



T. subglobosa, spira acuminata, decollate, anfractibus 

 quatuor, rotundatis, leevigatis, obsolete spiraliter striatis, albi- 

 cantibus, ultimo fascia basali fusca unica ; sutura distincta ; 

 apertura circulari, intus aurantiaca, peritremate albo, reflexo, 

 superne sinuato, prope umbilicum calloso ; umbilico minori, 

 spiraliter sulcato. 



Shell subglobose, with an acuminated but decollated spire, 

 consisting of 4 rounded, smooth volutions, with faint spiral 

 stria; ; volutions whitish, the last with a single fuscous band 

 near the base ; suture distinct ; aperture circular, orange 

 coloured within, peritreme white, reflected, sinuated above, 

 thickened on the side of the umbilicus, which is small and 

 spirally grooved. Madegascar. 



82. C. involvulus. (pi. xxvi. f. 114 to 116.) nob. 

 C. Volvulus. Lam. Anim. sans vert. vi. Turbo Volvulus, 

 Chemn. ix. f. 1066. 



T. globoso-conica, pallida, brunneo-variegata et fasciata, 

 spira depressiuscula, obtusa ; anfractibus 5 rotundatis, 

 superne spiraliter sulcatis, infra lsevibus ; sutura distincta ; 

 apertura circulari, superne subangulata; peritremate simphci; 

 reflexo, aetate subcontinuo, antiquato ; umbilico mediocri, 

 intus IcEvi. 



Shell of a globosely conical form, with a rather depressed 

 obtuse spire, consisting of 5 rounded volutions, spirally 

 grooved on the upper part, and smooth below; suture dis- 

 tinct ; aperture circular, rather angular at the upper part ; 

 peritreme simple, reflected, becoming somewhat continuous 

 and antiquated by age; umbilicus middle-sized, smooth 

 within ; colour pale, varied on the upper part, and banded on 

 the lower, with chestnut. This is one of several species 

 which are confounded by Lamarck under the name of C. 

 V olvulus ; it is common in India. 



83. C. carinatum. (pi. xxvi. f. 117- 1 18.)Lam. Anim. 

 sans vert, vi, 2. p. 143. 



T. globoso-conoidea, brunnea, spira acuminata, plerumque 

 decollata ; anfractibus 4 — 5, ventricosis, spiraliter carinatis, 

 carinis plurimis, confertiusculis ; apertura circulari, superne 

 subacuminata, peritremate albo, incrassato, subreflexo, callo 

 umbilicali conspicuo ; umbilico parvo, margine carina super- 

 eminente, intus carinato. 



Shell globosely conical, of a brown colour, with an acumi- 

 nated, generally decollated spire ; volutions 4 — 5, with nume- 



