Zoological Society. 437 
15. Hexrx ceratopzs, Pfr. Hel. testd subperforatd, globoso- 
depressd, tenui, minute striatd, nitiduld, pellucidd, corned ; spird 
parim elevatd ; anfractibus 5 subplanulatis, celeriter crescentibus, 
ultimo subdepresso; aperturd ampld, oblique lunari ; peristomate 
simplice, acuto, margine columellari breviter reflexiusculo, perfo- 
rationem fere occultante. 
Diam. 163, alt. 9 mill. 
Collected on the islands of Luzon and Mindoro, by H. Cuming, 
Esq. 
16. Hezrx sprenpiputa, Pfr. Hel. testd late umbilicatd, depres- 
sissimd, pallid olivaceo-corned, nitidd, striatuld, lineis concen- 
tricis, magis minusve distinctis obsolete reticulatd ; spird pland ; 
siuturd profundd ; anfractibus 34 subplanulatis, celeriter crescen- 
tibus, ultimo lato; umbilico lato, perspectivo; aperturd obliqud, 
lunato-ovali; peristomate simplice, acuto, marginibus conniventi- 
bus, dextro obliqué descendente, antrorsum subarcuato. 
Diam. 84, alt. 34 mill. 
Hab. East Australia, near Torres Strait (Lieut. Ince, R.N.). 
17. Hewrx papiuuata, Pfr. Hel. testd umbilicatd, depressd, sub- 
discoided, solidiusculd, irregulariter striatd, opacd, albidd, spadiceo- 
nebuiosd, saturatiusque strigatd et maculatd; spird pland, apice 
papillatim prominente ; anfractibus 5 planiusculis, ultimo descen- 
dente, depresso-rotundato ; umbilico angusto, pervio; aperturd 
obliqud, lunato-orbiculari ; peristomate simplice, acuto, margine 
columellari vix dilatato. 
Diam. 23, alt. 11 mill. 
Locality unknown. 
18. Hexrx sprrunata, Pfr. Hel. testd imperforatd, depressd, len- 
ticulari, subtilissimé striatd, lineis elevatis concentricis utrinque 
notatd, tenui, fulud, carinatd ; carind compressd, subexsertd ; spird 
parim elevatd ; anfractibus 5 lenté crescentibus, supra carinam 
convexiusculis, ultimo basi vix convexo, medio impresso ; aperturd 
depressd, subrhomboided ; peristomate simplice, acuto. 
Diam. 9, alt. 4 mill. 
Hab. Real Llejos, Central America; found on trunks of trees 
(Cuming). 
19. Hexrx inscunpta, Pfr. Hel. testd imperforatd, depressd, 
utringue convexiusculd, acute carinatd, soliduld, castaned, superne 
costulis confertis et lined spirali, carine paralleld, insculptd ; an- 
fractibus 5 planulatis, ultimo basi levigato, juxta carinam lined 
impressd notato ; columella dente unico brevi, acuto, albo munitd ; 
aperturd depressd, securiformi ; peristomate simplice. 
Diam. 8, alt. 4 mill. 
Locality unknown. 
20. Hexrx sinairensis, Pfr. Hel. testd umbilicatd, orbiculato- 
convexd, tenui, confertim striatd, corned; spird convexd, obtusd ; 
anfractibus 7 angustis, vix convexiusculis, carind filiformi cinctis, 
ultimo basi conveviore ; umbilico lato, perspectivo ; aperturd rotun- 
