verse the shell transversely, and a white sutural line is traced on the 

 last two whorls. 



Var. a. With a broad fascia cutting the body whorl. 



Var. j6. Yellowish ground colour, with few markings. 



This species approaches A. turgida, but is distinct in appearance, 

 locality and habits. 



^ 11. ACHATINELLA TURGIDA (PI. XXII. fig. 10, 100). A. testa 



ventricosa, in apice acuminata, sinistrorsa vel dextrorsa^ Icevi, po- 

 lita; anfr. 4 graduatim, ^ultimis rapide increscentibus ; sutura sub- 

 impressa, infra cum depressione lineari ; apertura subovata ; colu- 

 mella brevi, in tuberculum conicum, in aperturam projiciens ter- 

 minante ; labro exteriore simplici, interne incrassato, sicut tuber- 

 culum subroseo vel fusee tincto ; faucibus albis ; colore variante, 

 fundo albo, flavo vel nigro, lineis ziczac longitudinalibus , vittis vel 

 transversis vel maculis sparso. , 



T u , ' 11 , <MHM* W -^^ ** * 



Long. -;lat. -poll. 



Hob. Ewa, Oahu. 



Shell ventricose, pointed at the apex, sinistral or dextral, smooth, 

 polished, gradually enlarging for four turns and then very rapidly, 

 the last two forming most of the shell ; suture slightly impressed, 

 beneath which revolves a linear depression ; aperture subovate ; colu- 

 mella short, terminating in a strong conical tubercle projecting into 

 the aperture ; outer lip simple, thickened within, slightly tinged with 

 pink or brown ; tubercle the same ; fauces white ; colouring ex- 

 tremely various, ground white, yellow or black, with (or without) 

 longitudinal zigzag lines, transverse bands or blotches covering the 

 surface. 



Approaches the tristis of Ferussac found at Waianoe. 



12. ACHATINELLA CYLINDRTCA (PL XXII. fig. 11). A. testa 

 dextrorsa, elongato-cylindrica, pyramidis instar ad apicem decur- 

 rente ; anfractibus 7, subrotundis ; apertura oblongo-ovata ; colu- 

 mdla in dentem flexuosum terminante ; testce superjicie ad longi- 

 tudinem fortiter striata, subfusca, numerosis vittis fuscis et angus- 

 tis circumdata. 



Long.lf ; lat.| poll. 



Hab. Waianoe, Oahu. 



Shell dextral, elongately cylindrical, tapering to a point at the 

 summit ; whorls 7, slightly rounded ; suture moderate ; aperture ob- 

 long-ovate ; columella terminating in a flexuous tooth ; surface of 

 shell longitudinally strongly striate, of a light horn colour, encircled 

 by numerous narrow brown bands. 



This species, with the following, are found, like their nearest ana- 

 logues, on the ground ; viz. porphyrea and spirizona, which latter 

 species, by almost insensible gradations, passes into the turritella, a 

 shell apparently of quite a different type. 



^ 13. ACHATINELLA CASTA (PL XXII. fig. 12). A. testa conico- 

 elongata, solida, polita nitida dextrorsa vel sinistrorsa ; anfracti- 

 bus 6, rotundis, supra marginatis \ apertura subovata, breviuscula ; 



