30 
CycLostoma GicanTEuM. Cycl. testa orbiculato-subdepressd, cras- 
siusculd, albicante ; epidermide corned, fulvd, indutd, apice rufes- 
cente; anfractibus 5-6 rotundatis, transversim striatis, striis su- 
perne validioribus ; suturd distinctd ; strid longitudinaliter im- 
pressd prope suturam ; apertura subeffusd, superne angulata et in 
canalem inconspicuam subdecurrente ; peritremate subincrassato ; 
umbilico magno ; operculo lined elevatd spirali, interstitiis oblique 
striatis. 
Hab. in sylvis prope Panamam. 
Cycitostoma corrucatum. Cycl. testa orbiculato-subdepressd, 
crassiusculd, albidd, apice rufescente ; epidermide tenui, fusca, in- 
dutd ; spird subprominuld, acuminatiusculd ; anfractibus quinque 
rotundatis, transversim striatis et corrugatis; suturd distinctd ; 
aperturd circulari, subeffusd, superné angulatd et in canalem in- 
conspicuam desinente; peritremate tenuiusculo, margine acutiusculo, 
latere umbilicali incrassato ; umbilico magno, margine crenulato, 
intus transversim striato ; operculo testaceo, extis lamind elevatd, 
convolutd, intds corneo, polito. 
Hab. Jamaica. 
CycLosToMa cLaTHRATULUM. Cycl. testd subglobosd, crassiusculd, 
obscurd ; spird subconoidali, apice obtusiusculo ; anfractibus qua- 
tuor ad quinque rotundatis, superné longitudinaliter tenuiter stri- 
atis, infra levibus ; aperturd subovali, superné angulatd ; peritre- 
mate incrassato, supra umbilicum mediocre paululiim extenso. 
Hab. apud Yemen, Arabie. 
Cyctostoma TierInuM. Cyel. testa suborbiculari, conicd, crassi- 
usculd, leviusculd, pallescente, strigis irregularibus, transversis, 
saturate brunneis pictd ; spird subacuminatd, submammillari ; an- 
fractibus quinque,raptim crescentibus, rotundatis, plerumque carinis 
tribus vel quatuor subobsoletis ; aperturd magnd, orbiculari, postice 
subemarginatd; peritremate reflevo, albo, incrassato, prope ultimum 
anfractum subinterrupto ; labio columellari subextenso umbilicum 
mediocre partim tegente ; suturd distinctd ; operculo tenut, corneo, 
multispirali, anfractuum marginibus lamellosis. Long. 1°0; lat. 
1°25 poll. 
Mr. Cuming has collected the following varieties, viz :— 
Var. a. Shell with three rather indistinct spiral ridges ; peritreme 
nearly white. 
Var. 6. Shell with three rather indistinct spiral ridges ; peritreme 
dull brown. Found under decayed leaves in the island of Guimaras. 
Var.c. Shell with a more elevated spire and with three promi- 
nent spiral ridges, together with some small interstitial ridges. 
Found under decayed leaves in the island of Masbate. 
Var. d. Shell dark brown, with less conspicuous streaks ; aperture 
orange-brown. Found under decayed leaves in the island of Leyte. 
Var e. Shell like: var. d, but larger and paler. Found under de- 
cayed leaves at Ca >alonga, in the isle of Samar. 
