456 Zoological Society. 



cucullatim elevate, turn emarginalo et anfractui penultimo adnata. — 

 Operculum tcstaceum, planum, anfractihus 3, marginibus lamelloso- 

 liberis. 



Long. IG, diam. 7 mill. 



/3. T. minor, crenulis sutura confertis, acutis. 



Ilab. Yucatan, var. /3. in India occidentali. 



23. Cyclostoma HiSTRio, Pfr. C.testd profunderimatd.ovato- 

 conicd, solidiusculd, longitudinaliter confertim plicatd, parum ni- 

 tidd, albidd, strigis lutis obliquis, angulosis, fuscis pictd ; spird 

 elato-conicd, vix truncatuld ; suturd superne minute denticulatd, 

 anfractuum inferiorum subsimplice ; anfractibus A\, convexis, ul- 

 timo rotundato, basi ultra axin subproducto ; aperturd subobUqud, 

 subcirculari, intus nilidd,fulvidd, nebulosd ; peristomate lateritio, 

 duplice: interna conlinua, late expanse, appresso, externa latiore, 

 Jiarizontaliter patents, superne sinuate-angulate , ad anfractum 

 penultimum hreviter interrupto. — Operculum^. 



Long. 20, diam. 1 1 mill. 

 Hab. in insula Jamaica. 



24. Cyclostoma integrum, Pfr. C. testd perforatd, turritd, 

 tenuiusculd, integrd, lineis ebselete eleoatis spiralibus et costulis 

 confertis longitudinalibus (tertid vel quartd qudvis validiore) sub- 

 decussatd, fulvidd, fasciis interruptis rufis cingulatd; spird regu- 

 lariter turritd, apice ohtusiusculd ; suturd subconferte denticulatd; 

 anfractibus 7, convexis, 2 primis Imvigatis, ultimo rotundato, 

 antrorsum breviier soluto, vix descendente, basi rotundato, fasciis 

 2—3 continuis rufis ornato ; aperturd vix obliqud, avail; peri- 

 stomate subduplicalo : interna continuo, adnata, externa patente, 

 superne subangulato-dilatata, turn emarginato, latere columellari 

 undulate. — Operculum cartilagineum, planum, paucispirum. 



Long. 12, diam. 5 mill. 

 Hab. in India occidentali. 



25. Cyclostoma harpa, Pfr. C. testd breviter rimatd, oblongo- 

 turritd, tenuiusculd, plicis longitudinalibus chordiformibus sub- 

 distantibus munitd, cinnamameo- earned, haud nitente, lineis rufis 

 strigatim interruptis ornatd; spird turritd, integrd, sursum nigro- 

 violaced, apice obtusd ; suturd profundd, plicis prominentibus sub- 

 crenatd ; anfractibus 6, convexis, ultimo rotundato ; aperturd ver- 

 ticali, ovali-subcirculari ; peristomate rubella, duplice: interna 

 expansiusculo, appresso, externa undique vix dilatato-patente, 

 anfractui penultimo breviter adnata. — Operculumi 



Long. 12, diam. 6 mill. 



Hab. Almendares prope Havana. 



26. Cyclostoma pingue, Pfr. C. testd umbilicatd, oblongo- 

 turritd, truncatd, solidd, liris spiralibus obtusis undulatd, striis 

 longitudinalibus cenfertissimis sculptd, aleoso-micante, cinnama- 

 meo-fuscd; suturd profundd, simplice ; anfractibus superstamate 

 4, convexis, regulariter accrescentibus , ultimo rotundato; aperturd 

 subverticali, fere circulari ; peristomate albo, duplice: interno 



