C Y C L T U S . 



Plate VIII. 



Species 40. (.Mas. Cuining.) 



Cyclotus sutur.\.lis. Cycl. tedd pi-rumplUer dkcoidm, 



luiescente-fuscd, cuifractlljiis lawjatk, niir/iiatis, ad 



sitluram conspiciie Uralo-iiiarr/innlls. 

 The sutural Cyglotus. ^Iiell very largely umbilicated, 



discoid, yellowish-brown, whorls smooth, narrow, 



conspicuously ridge-margined at the suture. 

 Cydostoma siUurale, Sowerby, Pro. Zool. Soc. 181.3, 



p. 39. 



Aperodoma siitnrak', Pt'eili'er. 



Cyclotus suturalis, fi I'ay. 

 Hah. Jamaica, Demerara. 



Characterized by a distinct marginal ridge next the su- 

 ture. 



Species 41. (Mus. Cuming.) 



Cyclotus dubiosus. Cycl. testa snbnmpliter umbilica- 

 td, Ju'lkoided, sordid?, alljd, epidmnide tenia deciditd 

 bididd, aiifractibas sf.banr/nstis, undique transversiw 

 Jilo-striatis. 



The doubtful Cyclotus. Shell rather largely um- 

 bilicated, helicoid, dull white, covered with a thin 

 deciduous epidermis, whorls rather narrow, trans- 

 versely thread-striated throughout. 



Cydostoma diibiosiim, C. B. .\dams, Contr. to Conch, 

 no. ix. p. 157. 

 Cydotns dubioaus, Pfeitfer. 



Hab. Jamaica. 



Closely sculptured throughout with thread-iike stria\ 



Species 42. (Mus. Cuming.) 



Cyclotus okbellus. Cyd. festd .mbampUler umbUi- 

 catd, suljdiscoided, aiirantio-fulvd, diaphaiid, anfradi- 

 bus anrjustis, ad sntiiruiu. cinialicalato-impressis, spi- 

 raliter filo-Uratiii, llrls disUintibiis. 



The little orb Cyclotus. Shell rather largely um- 

 bilicated, somewhat discoid, orange-fulvous, diapha- 

 nous, whorls narrow, canaliculately impressed at the 

 suture, spirally thread -ritlgcd, ritlges distant. 



Cydosloiiia orbella, Lamarck, Anim. sans vert. vol. viii. 

 p. 300. 

 Cydostoma variabile, Ferussac. 



Cydost.oiua Lauuirckii, Petit. 

 Cydotns orbellns. Gray. 

 Hub. Madagascar, Guadaloupe? 



A delicate spirally corded semi-transparent shell, par- 

 taking somewhat of the generic character of Cydophorns. 



Species 43. (Mus. Cuming.) 



Cyclotus subflammulatus. Cyd. testa modice umbi- 

 licatd, fulvesceute-corned,fusco palllde flammatd, an- 

 fradibus dedivi-convexis, lavibus, aperturd tumidins- 

 culd, labro tenue rejlexo. 



The faintly-flamed Cyclotus. Shell moderately um- 

 bilicated, fulvous horny, faintly flamed with brown, 

 wliorls slopmgly convex, smooth, aperture rather 

 swollen, lip thinly reflected. 



Pfeiffek, MS. in Mus. Cuming. 



Hab. ? 



A semi-transparent shell with a faint indication of ra- 

 diating flames. 



Species 44. (Mus. Cuming.) 



Cyclotus patera. Cyd. testd ampUter umbilkald, dis- 

 coided, lioido-corned, epidermide intense fused biseria- 

 tm crktatd indutd, anfradibns anyiislis, spiraliler 

 liraio-striatis. 



The goblet Cyclotus. Shell largely umbilieated, dis- 

 coid, livid-horny, covered with a dark-brown bi- 

 seriately tufted epidermis, whorls narrow, sjjirally 

 ridge-striated. 



Pfeiffer, MS. in Mus. Cuming. 



Hub. Lao Mountains; Mouhot. 



The chief peculiarity of this species consists in its 

 double-tufted epidermis. 



Species 45. (Mus. Cuming.) 



Cyclotus Lindstedti. Cyd. testd snlmmpHter nnibili- 

 catd, lutescente, castaneo-jnsco profuse acute uudulatd, 

 unfractibus rolundatis, transverumfilo-striatis. 



October, 1S63. 



