104 
spiralibus in anfr. ultimo evanescentibus sculpta, opaca, carneo- 
albida ; spira convexo-conoidea, submucronata; anfr. 43 con- 
vexiusculis, sensim accrescentibus, ultimo subdepresso, basi circa 
umbilicum conicum, 4 diametri fere equantem, abrupte angulato ; 
apertura obliqua, superne et basi subangulata ; perist. continuo, 
obtuso, recto, ad angulum circa umbilicalem subproducto.— Operc. 
concavo, calcareo, arctispirali. 
Diam. maj. 9, min. 73, alt. 5 mill. 
Hab. Isle of Aneiteum, New Hebrides (Macgillivray). 
14, Cyctostoma (AULOPOMA) GRANDE, Pfr. C. testa umbili- 
cata, depressa, solida, confertim distincte striata, sulcis spiralibus 
nonnullis remotis sculpta, sub epidermide nigro-fusca, se@pe 
Sfasciatim detrita, obsolete marmorata ; spira brevissima conoidea, 
vertice subtili, acuminato, nigricante ; anfr. 5 convexis, ultimo 
terete, basi leviore, antice breviter soluto, vir descendente ; aper- 
ura obliqua, subcirculari ; perist. simplice, recto..—Operc. sub- 
sexspirato, anfractibus oblique valide plicatis. 
Diam. maj. 25, min. 213, alt. 13 mill. 
Hab. Ceylon (Mr. Thwaites). 
15, CycLtostoma (CycLOPHORUS) FORBESIANUM, Pfr. C. testa 
umbilicata, subdepressa, solida, liris spiralibus inequalibus sub- 
confertis cincta, opaca, albida vel rubella; spira parum elevata, 
vertice submucronato; anfr. 5 convexis, ultimo descendente, 
terete ; umbilico conico, + diametri superante ; apertura parum 
obliqua, subcirculari, intus alba vel vinosa; perist. simplice, recto, 
superne subdilatato, breviter adnato.—Operc. pallido. 
Diam. maj. 23, min. 18, alt. 11 mill. 
Hab. Lord Howe’s Island; New Hebrides (Macgillivray). 
16, CycLosroma (CycLopHORUS) CONVEXIUSCULUM, Pfr. C, 
testa umbilicata, convexiuscula, tenviuscula, epidermide sordide 
Suscescente, confertim membranaceo-plicata, ad suturam squamosa, 
induta ; spira parum elevata, vertice subtili; anfr. 44 modice 
convexis, ultimo subdepresso, basi rotundato ; umbilico aperto, 
3 diametri formante; apertura obliqua, subcirculari ; perist. 
continuo, breviter adnato, simplice, recto.—Operc. corneo, in- 
distincte arctespirato. 
Diam. maj. 6, min. 5, alt. 22 mill. 
Hab. Cape of Good Hope (Macgillivray). 
17. CycLostoma (LEPTOPOMA) BARBATUM, Pfr. C. testa um- 
bilicata, depresso-turbinata, tenui, acute carinata, sub epidermide 
arcuato-striata, fulvo et castaneo variegata; spira turbinata, apice 
acuta; anfr. 5 convewxiusculis, superne liris 3-4 prope carinam 
munitis, ultimo ad carinam pilis squamosis barbato, basi con- 
vexiore, liris 2 distantibus nonnullisque obsoletioribus subangulato ; 
umbilico mediocri, conico ; apertura fere diagonali, subcirculari ; 
perist. duplice ; interno continuo, expansiusculo, ad anfr. penul- 
