: 
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249 
equalibus, ultimo anticé soluto, dorso carinato, basi rotundato, 
distinctius spiraliter sulcato; aperturd verticali, angulato-ovali ; 
peristomate subsimplice, continuo, undique breviter expanso.— 
Operculum ? 
Long. 12, diam. 5 mill. 
Hab. ——? © 
31. CycLosroma LucuBRE, Pfr. C. testd perforatd, turrito- 
oblonga, solidd ; truncata, liris obtusis spiralibus, costulisque sub- 
membranaceis illas transgredientibus sculptd, fusculd, violaceo- 
Susco late unifasciatd ; spird parum attenuata; suturd confertim 
et subacute fasciculato-crenatd ; anfractibus superstomate 5, con- 
vexiusculis, ultimo antice breviter soluto, subdescendente, dorso 
compresso, basi distinctius spiraliter lirato; aperturd verticali, 
oblique ovali ; peristomate subsimplice, continuo, margine sinistro 
breviter, reliquis pauld latius expansis, subundulatis.— Operculum ? 
Long. 16, diam. feré 7 mill. 
Hab. in insula Jamaica. 
32. CycLtostoma Kustert, Pfr. C. testd perforatd, ovato-turritd, 
truncatd, tenui, sulcis spiralibus et costulis longitudinalibus con- 
Sertis regulariter granulato-reticulatd, vix nitente, diaphand, fusco- 
corned, lineis obsoletis rufis interruptis pictd; spird convexo- 
turritd, late truncatd; suturd profundd, simplice; anfractibus 
superstomate 4, convevis, ultimo angustiore, rotundato ; aperturd 
subverticali, subcirculari; peristomate duplice: interno breviter 
expanso, adnato, externo campanulato-expanso, concentricé striato, 
anticé concavo, rufo-radiato, superné angulato, ad anfractum pen- 
ultimum angustato.— Operculum ? 
Long. 14, diam. 7 mill. 
Hab. Honduras (Mr. Dyson). 
33. CycLostoMA TROCHLEA, Pfr. C. testd perforatd, oblongo- 
turritd, truncatd, costis filaribus spiralibus et longitudinalibus 
subregulariter clathratd, haud nitente, pallide fusculd, punctis 
rufis subseriatis variegatd ; spird elongata, trochleari, lat? trun- 
catd ; suturd profundd, simplice ; anfractibus superstomate 5, per- 
convexis ; aperturd verticali, subcirculari; peristomate duplice : 
interno vie porrecto, externo horizontaliter expanso, supern® in 
rostrum recurvatum dilatato, ad anfractum penultimum breviter 
interrupto, latere sinistro inciso-crenulato.—Operculum? 
Long. 14, diam. 6 mill. 
Hab. ? 
34. CyCLOSTOMA ALTERNANS, Pfr. C. testd mediocriter umbili- 
catd, conoideo-depressd, tenuiusculd, acute multiliratd, liris al- 
ternis minoribus, haud nitente, subepidermide pallide lutescente 
Sugace albd ; spird breviter conoideo-elevatd, obtusiusculd ; suturd 
subcanaliculatd ; anfractibus 5, convexiusculis, ultimo rotundato ; 
aperturd parum obliqud, subcirculari ; peristomate simplice, recto, 
Jusco-limbato, subcontinuo, marginibus ad anfractum penultimum 
