A C H A T I N A . 



Spccu-s 13. (ilus. Cuming.) 



Acii.\TiNA PRUXUJI. Achat, testa ovatd, teniii, veyitrico- 

 siiixciilii, spird apicem verms obtusd, anfractibus qitbi- 

 que, infra suturas appressis, laviuseulis, apicem versus 

 mimUissime decnssatis, colimielld arenatd, vix truncatd ; 

 aureo-lutescente, castaneo latistrigatd,superne purpureo- 

 rosed. 



The plum Achatina. Shell ovate, thin, rather veutri- 

 cose, obtuse towards the apes, whorls five in number, 

 appressed beneath the sutures, somewhat smooth, 

 very minutely decussated towards the apex, columella 

 arched, but sUghtly truncated ; pale golden-yellow, 

 broadly streaked with ehesnut, purple-rose towards 

 the upper part. 



Hi,/,. \\\>t Africa. 



.\ striking species, distinguished by its obtuse growth 

 and jiiculiar colouring. The last whorl is of a delicate 

 goldcu-yellow, marked with dark ehesnut streaks converg- 

 ing together at the base, whilst the upper whorls are of a 

 purple-rose, indistinctly spotted at the sutui-es. 



This species may possibly have been taken for the young 

 of jI. marginata, but it is certainly distinct. 



Species 1-1. (Mus. Dennison.) 



Achatina jiakginata. Achat, testa conico-ovatd, veii- 

 tricosd, anfractihiis sex ad septem, Icevibus, apicem 

 versus minntissime decussatis, infra suturas pecuUariter 

 marginatis, columelld subprofunde arcuald et contortd, 

 lutescente, nigricaiite-castaneo profuse midulatd et stri- 

 gatd, apice intense rosea, colimielld nunc alba, nunc 

 rosed, aperturafauce carulescente-alid. 



The margined Achatina. Shell conicaUy ovate, ven- 

 tricose, whorls six to seven in number, smooth, very 

 minutely decussated towards the apex, peculiarly mar- 

 gined beneath the sutures, columella rather dcciilv 



arched and twisted ; yellowish, profusely waved and 

 streaked with blackish ehesnut, apex deep rose, colu- 

 mella sometimes white, sometimes rose, interior of 

 the apertm-e bluish-white. 



SwAiNsoN, Zool. Illus. pi. 30. 

 Achatina amphora. Jay. 



Hab. West Afi-ica. 



Mostly very ricldy marked externally, but not coloured 

 in the apertiu'e as in the species which follows. 



Species 1.5. (Fig. a, Mus. Cuming ; Fig. b, Mus. Deimison.) 



Achatina purpurea. Achat, testa ovatd, aolidiusculd, 

 anfractibus sex, convexis, infra suturas marginatis et exi- 

 mie crenulaiis, longitudinaliter sttiatis, apicem versus 

 decussatis, columelld subprofunde arcuatd et contortd; 

 c<erulescente-olivaced, pallide fusco raro strigatd, apice 

 rosaceo, columelld et aperture fauce intense roseis, 

 interdum nigro-purpureo marginatis. 



The purple Achatina. Shell ovate, rather solid, 

 whorls six in number, convex, margined and delicately 

 crenulated beneath the sutures, longitudinally stria- 

 ted, decussated towards the apex, columella somewhat 

 deeply arched and twisted ; bluish-olive, faintly 

 streaked at distant intervals with pale brown, pink 

 at the apex, coliunella and interior of the aperture 

 deep rose, sometimes edged with black-purple. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol.viii. p. 296. 

 Bulla purpurea, Chemnitz. 

 BuUmiis purpurascens, Bniguiere. 



Hab. Cape Palmas, West Ahica. 



This species may generally be recognised by the deep 

 rose coloiu-ing of the apertm-e and columella, which, as in 

 the beautiful specimen figured from Mr. Deuuison's col- 

 lection, is sometimes edged with very dark puqile, ap- 

 proaching to black. 



February, IS-iQ. 



