194 
embrace the various forms which it takes in the specimens now sub¬ 
mitted by Mr. Cuming from various localities. 
Melania diadema. M. testa spinosd, acuminato-ovatd, transver- 
sim lineatd, subpapyraced, diaphand, pallio lutescente; spird sca- 
lariformi, acuta; suturd lineatd; anfractibus octo, superne an- 
gulatis, plants supra et infra; angulo spinis instructo; spinis 
magnis, crebris, regularibus, brevibus, eversis, aliquando decur¬ 
rent ibus; lineis transversis, minimis, decussatis; anfractu ultimo 
bullato, adbasim line at o; aperturd magnd, ovatd; columella al- 
bidd, incurvd; epidermide hispidd. 
Ilab. Small streams, isle of Guimaras, Philippines. 
Length 1*4, diam. '8 of an inch. 
Remarks. —Differs from M. amarula in the thinness of its sub¬ 
stance, and regularity and closeness of its spines, which are all bent 
outwards, at a regular angle. 
Melania corntjta. M. testa spinosd, elongato-ovatd, crassa, fus- 
cescente vel viridescente; spird exsertd, scalariformi, apice trun- 
catdi; suturd lineari; anfractibus medio angulatis, superne sub- 
concavis; angulo spinis instructo; spinis magnis, brevibus, incurvis, 
raris, acutis, basi latissimis, distortis, decurrentibus, antice cana- 
liculatis; anfractu ultimo mag no, ad basim transversim striatulo; 
aperturd magnd, ovatd; columelld lacted. 
Hab. Madagascar. 
Length 1*5, diam. *9 of an inch. 
Remarks. —The spines are short, stout, and irregularly bent, pre¬ 
senting the appearance of horns, and distinguishing the shell from 
M. amarula , which it otherwise somewhat resembles. 
Melania acanthica. M. testd spinosd, ovato-turrita, varicosd, 
transversim lineatd, subtenui, fused; spird elongatd, conicd, sca¬ 
lariformi ; apice truncatd; suturd lineari; anfractibus superne 
angulatis, varicibus distortis; angulo spinis instructo; varicibus 
magnis, regularibus, subobliquis, superne in spinis productis; 
spinis longis, tenuibus, irregularibus, extortis; lineis transversis, 
crebris, parvis, sub alternant ibus; anfractu ultimo parvo, ad 
basim lineat o; aperturd ellipticd, inf erne effusd; labro infer ne 
producto; columelld parvd, inf erne incrassatd. 
Hab. Manilla and isle of Negros, Philippines. 
Length *8, diam. '4 of an inch. 
Remarks .—Bears some resemblance to M. scabra, Ferussac, and 
M. bellicosa, Hinds. 
Melania zeylanica. M. testd leevi, ovatd, crassd, nitidd, albidd 
aut virido-fused ; badio flammulatd, spird brevi, acuminatd , apice 
acutd, aliquando erosd; suturd lineari; anfractibus quinque, con- 
vexis , ad suturam superiorem impressis, maculis fiammulatis aut sa- 
gittatis badiis; anfractu ultimo magno, bullato; basi Icevi; aperturd 
ovato-rotundd, superne angulatd, inf erne rotundatd, intus albidd; 
columelld magnd, albd, superne incrassatd, inferne curvatd. 
