1869.] Descriptions of marine Gastropoda from Ceylon, Sfc, 161 



Rapana bella-N. S., Pi. XVII, Fig. 6. 



T. pyriformis, tenuis ; anfractibus quinis, convexis, suturd impress a 

 nmctis, ultimo anfractu valde infiato ; spira brevi, obtusiuscula ; superficie 

 alba, fasciis ac striis roseolis, transversaliter elongatis notata, ac striis 

 spiralibus,postice sidt-obsoletis, antice ad, basin crassis, lamellatis, sen, cris- 

 piculatis ornata; apertura lata, arcuata, postice sub-angulata antice multo 

 angustiori ; labro simplici, tenui ad marginem undulato ; labio levi. 

 imprimis antice calloso ; basi producta, antice canali brevi recurvato. ter- 

 minata, umbilicata : umbilico carina rugatd sen lamellosd circumscripta, 



Alt. 21 Mil.—Diam. maj. 22 Mil. 



Very rare. Bourbon and Ceylon. 



Wood in his " Catalogue of Shells" (pi. 18, fig. 31b) figures a shell 

 apparently belonging, to this species, under the name of Bulla rapa, 

 Lin., from China. Hanley, however, in his " Ipsa Linnei Conchylia" 

 states that Linnseus' Bulla rapa is identical with Lamarck's Pynda 

 papyracea, a quite different species from the present one. 



. Emarginula papilionacea— N. s., Pi. XVII, Fig. 12. 



T. ovato elongata, subconica, moderate elevata, tenuis, alba ; apice sub- 

 centrali postico, acuminato ac incurvo ; superficie, costulis radiantibus 

 quindecimis fortioribus, sub-tuberculatis ac scrobiculatis, lineis alteris 

 numerosis tenuioribus, rugidatis interpositis ornata ; fissura antica 

 moderate incisa, subangusta, postice elevata ac rugulosa ; superficie 

 interiori nitida, radiatim leviter sulcata, impressione musculari quadri- 

 partita, partibus duabus anterioribus multo minoribus quam posteribus, 

 omnibus triangularibus convergentibus. 



Long. 12J Mil.—Diam. 9 Mil. 



Very rare, — S. Prov. Ceylon. 



There is no species at all resembling this handsome shell ; the inter- 

 nal impression bears a rather striking resemblance to a butterfly, the 

 shell is sufficiently transparent for it to be clearly discernible from 

 the exterior. 



Emarginula capuloidea— N. S., Pi. XVII, Fig. 16. 



T. parva ; regtdariter ovata, capidoidea, tenuis, pellucida, apice 

 postico, arcutatim incurvalo, instructa ; superficie costulis per-numerosis 

 acutis, cequidistanlibus, tenuioribus alternant ib us notata, interspatiu 



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