Zoological Society. 145 



embrace the various forms which it takes in the specimens now sub- 

 mitted by Mr. Cuming from various locaUties. 



Melania diadema. M. testd spinosd, acuminato-ovatd, transver- 

 sim Uneatd, suhpapyraced, diaphand, pallio lutescente ; spird sea- 

 lariformi, acutd ; suturd Uneatd ; anfractibus octo, superrie an- 

 gulatis, planis supra et infra ; angulo spinis instructo ; spinis 

 magnis, crebris, regularibus, brevibus, eversis, aliquando decur^ 

 rentibus ; lineis transversis, minimis, decussalis ; anfractu ultimo 

 bullato, ad basim lineato ; aperturd magnd, ovaid ; columelld al- 

 bidd, incurvd; epidermide hispidd. 

 Hah. 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. 



Melanta cornuta. M. testd spinosd, elongato-ovatd, crassd, fus- 

 cescente vel viridescente ; spird exsertd, scalariformi, apice trun- 

 catd; 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 magno, ad basim transversim striatulo ; 

 aperturd magnd, ovatd ; columelld lacted. 

 Hab. Madagascar. 

 Length To, 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. amarultty which it otherwise somewhat resembles. 



Melania acanthica. M. testd spinosd, ovato-turritd, varicosd, 

 transversim Uneatd, 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 tra7isversis, 

 crebris, parvis, subalternantibus ; anfractu ultimo parvo, ad 

 basim lineato ; aperturd elUpticd, inferne effusd ; labro infernk 

 ' producto ; columelld parvd, inferne 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. bellicosay Hinds. 



Melania zeylanica. M. testd lavi, ovaid, crassd, nitidd, albidd 

 aut virido fused ; badio fiammulatd, spird brevi, acuminatd, apice 

 acutd, aliquando erosd ; suturd lineari ; anfractibus quinque, con- 

 vewis, ad suiuram superiorcm imp7'essis, maculis flammulatis aut sa- 

 gittatis badiis; anfractu ultimo magno, bullato; basi Itevi; aperturd 

 ovato-rotundd, superne angulatd, inferne rotundatd, intus albidd; 

 columelld magnd, albd, superne incrassatd, inferne curvatd. 



Hab. Seychelles and Ceylon. 



Length '9, diam. "G of an inch. 

 Ann. ^ Mag. N. Hist. Ser. 2. VoL'w. 10 



