Zoological Society. 145 



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

 mitted by Mr. Cuming from various localities. 



Melaxia diadema. M. teste! spinosd, acuminato-ovatd, transver- 

 sim lineatd, subpapyraeed, diaphand, pallio lutescente ; spird sca- 

 lariformi, acuta; suturd lineatd; anfractibus octo, superne an- 

 gulatis, plants supra et infra; angulo spirits instructo ; spinis 

 magnis, crebris, regularilus, brevibus, eversis, aliquando decur- 

 rentibus ; lineis transversis, minimis, decussalis ; anfractu ultimo 

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

 bidd, incurvd ; epidermide hispidd. 

 Hub. 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. 



Melaxia corxuta. M. testa spinosd, elongato-ovatd, cr asset, fus- 

 cescente vet 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 ; anfraoiu 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. amarula, which it otherwise somewhat resembles. 



Melaxia acaxthica. M. testd spinosd, ov at o -turrit a, varicosd, 

 transversim lineatd, subtenui, fused ; spird elong aid, 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, subalternantibus ; anfractu ultimo parvo, ad 

 basim lineato ; aperturd ellipticd, infer ne effusd ; labro inferne 

 producto ; columelld parvd, inferne inerassatd. 



Hab. Manilla and isle of Xegros, Philippines. 



Length '8, diam. *4 of an inch. 



Remarks. — Bears some resemblance to M. scabra, Ferussac, and 

 M. bellicosa, Hinds. 



Melania zeylanica. M. testd Iccvi, ovatd, crassd, nitidd, albidd 

 aut virido fused ; badio flammulatd, spird brevi, acuminatd. apice 

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

 vexis, ad tuhtntm superiorem itnpressis, tnaculis flammulatis aut sa- 

 gittutis badiis; anfractu ultimo magno, bullato ; basi Icevi; aperturd 

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

 columelld magnd, albd, superne inerassatd, inferne curvat i. 



Hab. Seychelles and Ceylon. 



Length -9, diam. "6 of an inch. 

 Ann. % May. N. Hist. Ser. 2. Vol.ix. 10 



