102 



part ; peritreme thin, continuous ; umbilicus very small. 



Near Edinburgh, Mr, Gerarde. 



32. C. ciNCiNNUS. nob. (pi. xxiv. f. 77, 78.) 



T, suborbiculari, subturrita, tenui, albida, interdum fusco- 

 unifasciata ; anfractibus 5, rotundatis, postice spiraliter sul- 

 catis, sulcis subdistantibus, antice spiraliter, striatis ; sutura 

 distincta ; apertura circulari, peritremate tenui, versus umbili- 

 cum parvum subreflexo ; apice obtusiusculo. 



Shell suborbicular, somewhat turreted, thin, whitish, some- 

 times with a single brown band ; volutions five, rounded, pos- 

 teriorly spirally sulcated, the grooves rather distant, anteriorly 

 spirally striated ; suture distinct ; aperture circular, with a 

 thin peritreme, which is slightly reflected towards the small 

 umbilicus ; apex rather blunt. In Mr. Cuming's collection ; 

 locality unknown. 



33. C. MiNUTissiMUM. (pi. XXX. f. 251) Zool. Proc. 

 Feb. 1832. p. 32. 



T. globoso-pyramidali, fulva, apice nigro ; anfractibus 

 3 rotundatis, sutura profunda; apertura circulari, peritre- 

 mate acutb ; umbilico nuUo ; operculo corneo. 



This very minute species, which is not more than one- 

 twentieth of an inch in length, is not quite so wide as it is 

 long, but of a nearly globose form, though slightly pyrami- 

 dal ; it is of a dull l)ro^vnish yellow colour, Avith a black apex ; 

 volutions three, rounded, with a deeply impressed suture ; 

 aperture circular, its peritreme sharp : it has an horny oper- 

 culum, but no umbilicus. Found by Mr. Cuming under 

 dead leaves on Pitcairn's Island. 



34. C. PUPiFORME. (pi. xxiv. f. 43, 44.) nob. 



T. subacuminato-cylindracea, apice truncato ; anfractibus 

 4, turgidis, creberrime decussatis ; sutura distincta ; aper- 

 tura subrotunda, superne angulata ; peristomate subreflexo ; 

 umbilico minimo. 



Shell nearly cylindrical, very slightly acuminated, its apex 

 truncated or decollated ; spire consisting of 4 turgid, very 

 finely decussated volutions ; suture strongly marked ; aperture 

 nearly round, angular at the upper part, peritreme very 

 slightly reflected ; umbilicus very small, 



35. C. MAMiLLARE. (pi. xxiv. f. 45.) Lam. C. Volzianum, 

 Michelin Coq. d'Algers, 



T. subacuminato-cylindracea, Isevi, albicante, fusco- 

 punctulata, apice obtusiusculo ; anfractibus 5 — 6, subventri- 

 cosis, superne obsoletissime decussatis ; apertura subovali, 



