A C II ATI N A 



Species 22. (Fig. a and b, Mus. Cuming.) 

 AcHATlNA MDEBEA. Achat, testa pyramidaU-conicd, apicc 

 tumidd, basi suhplanatd et angulatd, anfraetibus se.v, 

 lavibus, poUtis, ad suturas miuutisdme marginatis, co- 

 Imnelld vix truncatd ; pallide luted, maculis ceeruleo- 

 viridibms oblungo-qteadrath nndntk pnklterrimt' tessel- 

 latd, interdum vivide luted, in/Miici'la/d, apice roseo- 

 incarnatd. 

 The porcelain Achatina. Shell pyramidally conical, 

 swollen at the apex, somewhat flattened and angular 

 at the base, whorls six in number, smooth, polished, 

 very minutely marginated at the sutures, columella 

 sbghtly truncated; pale yellow, very prettily tessellated 

 with waved oblong-square blue-green spots, some- 

 times bright yellow, unspotted, tinged with flesh-pink 

 at the apex. 

 Hah. ? 



A pretty specie 



rly distinct from the A.fasc'uita. 



Species r2o. (Mus. Cuming.) 



Achatina zebra. Achat, testd snbelongato-obloHgd, cras- 

 siMscidd, anfraetibus octo, grunoso-stnatis, grains in 

 anfractu ultimo evaiiidis, columelld suhrontortd ; intense 

 castaned, strigis angustis albis crebre fuhjiirutd, aper- 

 ture fauce carulescente-albd. 



The zebra Achatina. Shell elongately oblong, rather 

 thick, whorls eight in number, granosely striated, 

 gi-ains disappearing on the last whorl, columella 

 slightly twisted ; very dark chesnut, marked with 

 close naiTow zigzag white streaks, interior of the 

 aperture bluish-white. 



Lamarck, Anim.sansverl. (Deshayes" edit.) vol. viii. p. 39.5. 



Buccinum achatina, pars, Muller. 



Btdla zebra, Chemnitz. 



Bulimns zebra, Bruguiere. 



Cochlilohia zebra, Ferussac. 

 llah. CafiVaria, South Africa. 



It is curious to observe in this species, that the longitu- 

 dinal streaks become graduaUy narrower and more frequent 

 as the shell increases in growth. For a species commonly 

 placed with this in collections, in which the stripes are 

 broader and much fewer in number, and which differs 

 manifestly in form, see tlie preceding Plate, Sp. 18. 



Species 24. (Mus. Cuming.) 



Achatina carinata. Achat, testa pyramidali-cwiicd, 

 basi piano -ail gill n lei. aiifroctihus sex ad septern, plano- 

 conve.vis, sub Iciile iniiiiilissiiiie dectissatis, suturis sub- 

 excavalis, coluiudlavij; truncatd; pellucido-albd, fascia 

 opaco-albd ad' suturas et, in anfractu ultimo, adaiujulmu. 



The keeled Achatina. Shell pyramidally conical, 

 flatly angled at the base, whorls six to seven in 

 number, flatly convex, under the lens very miiuitely 

 decussated, sutures somewhat hollowed, .columella 

 scarcely truncated ; transparent white, encii-cled at 

 the sutures with a band of opake white, continued 

 round the angle of the last whorl. 



Pfeiffer, SymbohT, vol. iii. p. 9u. 



Bab. ? " 



An interesting species, distinguished by its angidar 



structure and delicate milk-white sutural band. 



February, 184-1). 



