ACHATINELLA. 



Species 17. (Mus. Cumiug.) 



AcHATiXELLA BELLA. Achat, testct conicd, dextrorsd, 

 unfraclibus subventricosis, columelld contorio-pUcatd ; 

 oUvaceo-luted, swturis nigro-fuscis, deinde albifasciatd, 

 nnfractu ultimo in/erne fiisco et alio fasciato. 



The pretty Achatinella. Shell conical, dextral, 

 whorls rather ventricose, columella with a twisted 

 plait ; olive-yellow, sutui'es black-brown, then white- 

 banded, last whorl brown and white-banded. 



Had. Motokai, Sandwich Islands. 



Ml-. Cuming possesses several specimens of this pretty 

 species of immature growth. The dark sutural band is 

 sometimes absent in the last whorl, but the white band 

 appears constant. 



Species 18. (Mas. Cuming.) 



.ViuiATiNELLA coLORATA. Aclutt. testd oUoiKjo-conkd, 

 dcxtronil, atifracllhm jilaHo-coiivexis, columelld coii- 

 torto-plicatd, aperiiird pand ; luted, viridi lati/as- 

 . cititd, auturis nhjro-fusch, columelld pallide rosacea. 



The coloured Achatinella. Shell oblong-conical, 

 dextral, whorls flatly convex, columella with a twisted 

 plait, aperture small ; yellow, encircled with a very 

 broad green band, sutures black-brown, columella 

 light pink. 



Hab. Sandwich Islands. 



Characterized, like A. pulckerruiia, by a dark sutural line 

 within the sutui-e, liut of a less elongated form. The 

 ground-colour is a bright yeUow, and each whorl is 

 painted with a broad bright green band. 



Species 19. (Mus. Cuming.) 

 Achatinell.\. abbreviata. Ac/tat. testd ovatd, subveii- 

 tricosd, dextrorsd, anfractibus convexis, superne ritargi- 

 natis, spird breviusculd, apice obtusd, columelld callosd, 

 coiitortd; olivaceo-lided, lined nigro-fuscd ad sutwras, 

 anfraciunm parte ivferiori nigricante-viridi. 

 The shortened Achatinella. Shell ovate, somewhat 

 ventricose, dextral, whorls convex, margined round 

 the upper part, spire rather short, obtuse at the apex, 

 columella callous, twisted ; olive-yellow, with a 

 black -brown line at the sutures, lower part of the 

 last whorl very dark green, apex black. 



April 



The form of this species is again distinct from either of 

 the preceding. 



Species 30. (Mus. Cuming.) 



Achatinella olivacea. Achat, testd oblongo-conicd, 

 sinistrorsd, anfractibus convexis, superne iemdmargina- 

 tis, columelld contorto-plicatd ; intense viridi-olivaced, 

 lineis fnscescentibus subobscure cingulatd, columelld et 

 apertura fauce alb is. 



The olive Achatinella. SheU oblong-conical, sinis- 

 tral, whorls convex, thinly margined round the upper 

 part, columella with a twisted plait ; dark green-olive, 

 encircled with rather obscure brownish lines, colu- 

 mella and interior of the aperture white. 



Ilab. ? 



The rich dark olive colouring of this species leaves off 

 suddenly in an abrupt line at the aperture, and the re- 

 mainder of the body-whorl is of an orange-fawn tint, like a 

 shell denuded to tliat extent of epidermis. 



Species 21. (Mus. Cuming.) 



Achatinella mustelina. Achat, testd aid sinistrorsd 

 aut dextrorsd, aciiniiiiiilu-coiiicd, anfractibus sitbrotun- 

 datis, superne miirgiiictin. mUinielld callosd, subap- 

 pressd, aperturd subaiiriculutd, labro incrassato ; fusco- 

 cinered, suturis et apice albis. 



The tawny Achatinella. Shell acuminately conical, 

 whorls somewhat rounded, margined round the upper 

 part, columella callous, rather appressed, aperture 

 slightly auriculated, lip tliickened ; brownish ash, 

 sutures and apex white. 



MiGHELs, Pro. Boston Nat. Hist. Soc. 1845, p. 31. 



Hab. Waianai, Sandwich Islands. 



Distinguished by its acuminated form and subaurieulatc 

 aperture, whilst the colouring is peculiar. 



I cannot agree with Dr. Pfeiffer, in regarding this and 

 ,/. Bidimoides as varieties of A. lorata. On referring to 

 De Ferussac's and Swainson's figures of these species, 

 which 1 have identified with specimens in BIr. Cuming's 

 collection, it will be found that all three are distinct from 

 each other, in form, sub'taiire, and arrangement of colours. 



