624 Mr. E. A. Smith on new Land- Shells 



the typical form is most striking and unusual. The purplish 

 apex and the white suture are common to all specimens. 

 Some are thickened within and very heavy and solid in con- 

 sequence, whilst others, on the contrary, are much thinner 

 and lighter. 



Xesta 2^olymorpfia. 



Testa fere imperforata, obtuse turbinata, albo-lutescens, confertim 

 nigro-punctata, apicem versus purpurascens, ad basim zona lata 

 nigro-t'uscaornata; spira lata, arcuata, obtusa ; anfractusGg, parum 

 convexiusculi, lente accrescentes, lineis incrementi obliquis tenui- 

 bus striati, ultimus baud descendens, iufra indistincte concentrice 

 striatus, circa medium pallidus ; apertura obliqua, late lunata, 

 intus plus minus purpureo-nigrescens ; peristoma arcuatum, mar- 

 gine dextro tenui, columellari incrassato, ad iiisertionem reflexo, 

 appresso. 



Diam. maj. 33 millim., min. 30; alt. 27. 



Var. a. Testa typo similis, sed basi pallida rufo-lutCBCente, sparsim 

 dilute nigro-punctata. 



Var. b. Testa flavescens, confertim subpellucide punctata, anfracti- 

 bus quatuor superioribus rosco-purpureis, ultimo infra rufcscenti- 

 luteo, apertura iutus pallida, peristomio rufcsccnte. 



Var. c. Testa pallide lutea, confertim pollucide punctata, anfr. 

 ultimo infra purpureo-nigro late zonato. 



Var. d. Testa albida, confertim pellucide punctata. 



Ilah. South Flores. 



The form of this handsome species is fairly constant, but 

 some specimens are rather more elevated than otiiers. Tlie 

 colour, on the contrary, is very variable ; in the type and 

 vars. a and h the u])per part of the spire is ])urj)lish, but in 

 the vars. c and d it is pellucid whitish, and the suture in all 

 the forms at this part of the shell is wiiite-margined. In the 

 type and var. a tlie last and penultimate whorls are stained 

 with black below the suture and at the middle of the body- 

 wdiorl. Although termed varieties for convenience' sake, it 

 must not be inferred that any persistency of coloration is 

 attributed to tliem, for there are no grounds for supposing that 

 these shades ot colouring arc transmitted I'rom one generation 

 to another, more esjteeially as all the forms occur together 

 under the same conditions. 



Xesta suhpoUta. 



Testa perforata, breviter turbinata, pallide castanca, versus apicem 

 viridi-ca?rulea vel viridcscens, subpolita, lineis incrementi tcnuibus 

 obliquis striati. striis spiralibus tcnuibus confertis supra spiram et 

 basim anfr. ultimi sculpta ; anfractus fi, convexiusculi, rcgulariter 



