CYCLOTUS. 



Plate VIT. 



Species 31. (.Atus. C'miiing.) 



Cyclotus distinctus. Ci/rl. hstii late aperte iimbili- 

 catd, dmoided, sub epidcruilJe oVn-aceo-hdea. albidd, 

 anfradibus anrjustis, lubiilimia, spiruUter tenuilimlis, 

 /iris reffidaribiis, allertm irUerdiiiti minoribus. 



The distinct Cyclotus. Sliell broadly openly umbili- 

 cated, discoid, vvhitisli, beueiitli an olive-yellow epi- 

 dermis, whorls narrow, (iibiihir, spirally finely ridged, 

 ridges regular, the alternate ones sometimes smaller. 



Ci/clostoma distindmn, Sowerby, Tlies. Conch, p. 106. pi. 

 34. f. 38. 

 Ci/dotiis didindiis, I'lriHrr. 



Ilab. West Columbia ; Cuniiiig 



A bright P/flwori/y-like species 

 throughout. 



Haiti; Salle, 

 regularly spirally ridged 



Species 3.5. (Fig. o. b. Ahis. Cuiiiiug.) 



Cyclotus glaucostoma. Cyd. tfdd modice sabpro. 



fnnde innbiUcald, dcprcuxD-couoidm, ustulato-fuscd, 



subtiis fidivsce)ite, aiifradibici dediri-rotundatis, spi- 



raliler decusml'mi corrtupdix. 

 The blue-mouth Cyclotus. Shell ludderately rather 



deeply urabilieated, de|)ressly conoid, burnt-brown, 



fulvous beneath, whorls slopingly rounded, .spirally 



decussately wrinkled. 

 Cijdostoma (CydoLus) glancodoimi, Pfeiffer, Pro. Zool. Soc. 



1S55, p. 103. 

 Hab. Venezuela. 



The wrinkled sculpture of this shell runs in the spiral 

 direction in a decussating nunnier, of quite a different 

 type from the concentric wrinkling of the Jamaica species. 



Species 36. (Fig. n, b, Mus. Cuming.) 



Cyclotus varians. Cyd. U-dd inujnhdc excavato-nmbi- 

 Ucatd, cramd, uslalato- fused, riifu tiiidd, anfradibus 

 dedifi-rotundatis, superne piicato-ruyosis et malkulis, 

 obsolde spiraJiter liratis, apertura fance rufd. 



The vabying Cyclotus. Shell angularly excavately 

 nuibilicated, thick, burni -brown, tinged with red, 

 whorls slopingly rounded, plicately rugose and mal- 

 leated rounil the upper part, obsoletely spirally 

 ridged, interior of the aperture red. 



Cydostoma varians, Contr. Couch, un. 8. p. 14.3. 



Cydotus varians, Pfeilfer. 

 Ilab. .Tamnica. 



A shell of stout growth, rudely plicated and malleated 

 next the sutures, with faint indications of spiral ridges 

 beneath. 



Species 37. (Fig. a, b, Jlns. Cuming.) 



Cyclotus Blanchetianus. Cyd. testd ampliter aperli 

 tmbilicatd, depressd, subdiscoided, ustulato-fulvd, ad 

 periplieriani pallidd, deinde castaneo latifasdatd, an- 

 fradibus ad suturas concavo-impressis, nndique dense 

 concentricefiloso-striatis. 



Blanchet's Cyclotus. Shell largely very openly um- 

 bilicated, depressed, somewhat discoid, burnt-fulvous, 

 pale, and then broadly chestnut-banded at the ])eri- 

 phery, whorls eoncavely impressed at the sutures, 

 densely concentrically thread-striated throughout. 



Cydoslonia Blandietianuni, Morieand, Mem. Soc. Phvs. 

 Geneve, vol. vii. p. 443. pi. 3. f. 21 to 33. 

 Cydotus Inca, var., Pfeiffer. 



Hab. Brazil. 



This differs from the typical form of C. Inca in being 

 more thinly flatly coiled, while it is uniformly of a differ- 

 ent colour. 



Species 38. (Fig. o. b, jMus. Cuming.) 



Cyclotus spuecus. Cyd. testd subanyuste nmbdicatd, 

 subyloboso-nonoided, sordide. fnlvescente-albd, anfrac- 

 tibns siibcontradis, dedivi-rotundalis, plus minus ob- 

 scure concentricefiloso-striatis. 



The dirty Cyclotus. Shell rather narrowly undjili- 

 cated, subglobosely conoid, dull fulvous-wliite, whorls 

 rather contracted, slopingly rounded, more or less 

 obscurely coueentrieally thread-striated. 



Cyctostomn spnrcuin, Grateloup, Act. Soc. Linn. Bordeaux, 

 vol. ii. p. 444. pi. 3. f. IS. 

 Otopoma spurcum, Gray. 

 Cydotus spurciis, Pfeiffer. 



Hab. Malabar, Bondjay. 



This is the first Indian Cyclotus that has come before 

 me in which the characters partake of those of the Western 



August, 1863. 



