CYC LOTUS. 



Plate V. 



Species ii. (Mus. Cuming.) 



CvcLOTUS SUBSTUIATUS. C'l/cl. (esdi subanipUter umhl- 

 licald, depri'ssd, fnlvd, aiifraiUibm aiit/iisCis, ruliindaiis, 

 ad suturas imprtssis et plicato-slriatls. 



The slightly-striated Cyclotus. Shell rather largely 

 iimbilicated, depressed, fulvous, whorls narrow, 

 rounded, impressed and plicately striated at the su- 

 tures. 



Ci/closloma substriaimn, Sowerby, Pro. Zool. Soc. 1843, 

 p. 61. 

 Cyclotus substriatns, Gray. 



Hub. Island of Siquijor, Philippines ; Cuming. 



Sculptured with concentric stride, which are more pro- 

 minent and puckered next the suture.-*. 



Species 23. (Fig. n, b, Mus. Caniing.) 



Cyclotus discoideus. Ci/cl. testa lalissinie aikpliter 

 Htnbilicatd, plano-dcpressn, snbdiscoided, palUdi fid- 

 vesceitte, subpellncidn, aiifractibiis nugnstis, rotmidalis, 

 pariim str'wtis, scriceis, labro conliniio, njhxo. 



The discoid Cyclotus. Sliell very broadly hirgrly 

 umbilicated, Hatly depressed, somewhat discoid, light 

 fulvous, somewhat transjiareut, whorls narrow, 

 rounded, but little striated, silky, lip continuous, 

 reflected. 



Cyclostoma dlscoideum, Sowerby, Thes. Conch, p. 111. pi. 

 25. f. 87, 88. 

 Cyclotus discoideus. Gray. 



Hub. Demerara; Sowerby. 



A naiTOW-whorled subdiscoidal shell, with a delicate 

 silky surface. 



Species 24. (Fig. a, b, Mus. Cunnng.) 



Cyclotus Popay'anus. Cycl. testa modice umbilicata, 

 subdepressd, sub epidermide fulvd decidud alba, versus 

 apicem rosacea, ad peripheriam fasciatd, anfractibus 

 superni concaviusciiUs, deiade declici-rotuudatis, coii- 

 centrice dense Jiloso-striatis. 



The Popayan Cyclotus. Shell moderately umbilicated, 

 slightly depresseil, white beneath a deciduous fulvous 

 epidermis, rose towards the apex, banded at the peri- 

 phery, whorls slightly concave round the uiipev part, 

 then slopiugly rounded, concentrically densely thread- 

 striated. 



Cyclostoiiia Popayainim, Lea, Obs. vol. ii. p. 91. pi. 23. 

 f. 70. 



Cyclostumn iiicoiispicuuiii, Sowerby. 

 Cyclotus iiico)ispicuus. Gray. 

 Cyclotus Popayauus, Pfeill'er. 

 Hab. Popayan, New Granada; Gibbon. Chimbora/.o ; 

 Linden. 



The whorls of this species, rather slopiugly inflated, are 

 characteristically tinged with rose towards the apex. 



Species 2.5. (Fig. a, b, Mus. Cuming.) 



Cyclotus stra.mineus. Cycl. testd modice prnfundi 

 utnbllicatd, subdepressd, eximie straniinen, anfractibus 

 declivi-rotundatis, pulclierrbne diayonaliler crispato- 

 corrugatis. 



The straw-coloured Cyclotus. Shell moderately 

 deeply umbilicated, rather depressed, delicate straw- 

 colour, whorls slopiugly rounded, very beautiftilly 

 diagonally crisply wrinkled. 



Cyclostoiiia stramiueum. Peeve, Pro. Zool. Soc. 1843, p. 4G. 

 Cyclotus straiitiiieus, Gray. 



Hub. Merida, West Colunjbia. 



Remarkable for the setnitransparent delicacy of its co- 

 lour and curious diagonally-wrinkled scidptin-e. 



Fig. 26. (Fig. a, b, Mus. Cuming.) 



This shell, which is Mr. Sowerby's C. subrugosus, is 

 merely a variety of Professor C. B. Adams's C. crassus. 



Species 27. (Mus. Cuming.) 



Cyclotus mucronatus. Cycl. testd subampliter apertii 

 tcmbilicatd, pallid!} luted, rufescente tiuctd, apice siib- 

 mucronato, anfractibus angustis, rotundatis, ad suturas 

 coHcentrice plicato-striaiis, sub lente superfcialiter 

 spiraliler striatis, labro reflexo. 



The pointed Cyclotus. Shellratlier largely openly um- 

 bilicated, pale yellow, tinged with red, apex rather 

 pointed, whorls narrow, rounded, plicately concentri- 

 cally striated at the sutures, faintly spirally striated 

 beneath the lens, lip reflected. 



Cyclostoma mucronatum, Sowerby, Pro. Zool. Soc. 1843, 

 p. 63. 

 Cyclotus mucronatus, Gray. 



Hab. Island of Luzon, Philippines; Cuming. 



Puckered with concentric striiE next the sutm-e, while 

 the general surface of the whorls is faintly spirally striated. 



August, 18 63. 



