251 
ultimo non descendente; umbilico mediocri, profundo; aperturd vir 
obliqud, rotundato-ovali ; peristomate simplice, recto, acuto, con- 
tinuo, breviter adnato, superné vir angulato.—Operculum mem- 
branaceum, paliidé corneum, rectispirum, extus profunde concavum. 
Diam. maj. 20, min. 153, alt. 12 mill. 
Hab. in Brasilia. 
40. CycLosroma curraTuM, Pfr. C. testd umbilicatd, depressd, @% “7 te 
solidd, glabrd, nitidd, lete castaned, maculis albis subtriangulari- 
bus guttatd ; spird vix elevatd, apice fuscd, submucronatd ; an- 
Sractibus 43, convexiusculis, celeriter crescentibus, ad suturam im- 
pressam striatulis ; umbilico latiusculo, pervio; aperturd parum 
obliqud, circulari, intus albidd ; peristomate subduplice: interno 
via distinguendo, externo expanso, superne in linguam brevem, 
anfractui penultimo adnatam, dilatato.—Operculum ? 
Diam. maj. 19, min. 15, alt. 9 mill. 
Hab. if 
41. CycLostoMa IGNESCENS, Pfr. C. testd perforatd, globoso- : 
conicd, tenui, lineis spiralibus subtilissimis confertim sculptd, dia- 
phand, nitidd, ignescente ; spird turbinatd, obtusiusculd ; suturd 
profundd ; anfractibus 43, convevis, ultimo basi distinctius sulcato ; 
aperturd obliqud, subcirculari; peristomate simplice, expanso, mar- 
ginibus approximatis, non junctis.—Operculum ? 
Diam. maj. 14. min. 11, alt. 11} mill. 
Hab. in Nova Hibernia. 
42. CycLostoma FuscuLuM, Pfr. C. testd angustissime umbili- 
catd, globoso-conicd, tenui, lineis elevatis spiralibus subconfertis, 
: lirdque periphericd validiore cariniformi sculptd, vie nitiduld, 
unicolore fusculd, fascid unicd angustd rufd infra carinam pallidam 
5 ornatd; spird conicd, obtusiusculd ; anfractibus 5, convexis, ultimo 
( interdum carind, secundo superne notato, basi minute spiraliter 
suleato ; aperturd parum obliqud, rotundato-ovali; peristomate 
simplice, tenui, undique expansiusculo, marginibus approximatis, 
non junctis.—Operculum testaceum, planum, cinereum, 4-spirum, 
nucleo subcentrali. 
Diam. maj. 114, min. 93, alt. 9 mill. 
Hab. ? 
43. CycCLosToMA CASTANEUM, Pfr. C. tesid anguste umbilicatd, 
globoso-conicd, tenui, oblique striatuld et liris subacutis multis 
sculptd, nitidd, saturate castaned ; spird eleuato-conicd, apice ob- 
tusiusculd ; anfractibus 43, angulato-convezis, ultimo liris 6 sub- 
equalibus, pluribusque minoribus, confertioribus in umbilico mu- 
nito ; aperturd parum obliqud, subcirculari ; peristomate simplice, 
tenui, undique expansiusculo, marginibus approximatis, non junctis. 
—Operculum testaceum, planum, paucispirum, nucleo subcentrali. 
Diam. maj. 11, min. 9, alt. 9 mill. 
Hab. in insula Madagascar. 
To this was added the following description of various species of 
Helicea. 
