11 



distincta, albida ; apertura ovata, infra expansa ; labro incras- 

 sato ; columella brevi, plana et oblique truncata ; colore epider- 

 matis subvirente, colore pallidiore ad longitudinem interspersa; 

 columella, labri et apertura albo. 

 Long. ;!*. poll. 

 Hab. Niu, Oahu. 



Shell conically ovate ; whorls 6, rounded and margined above ; 

 suture distinct and lined with white ; aperture ovate, expanding be- 

 low ; lip thickened ; columella short, flat and obliquely truncated ; 

 colour of epidermis light green, interspersed with a fighter shade 

 arranged longitudinally ; columella, lip and aperture white. 

 Var. a. Pure white. 



Var. /3. Brown or chestnut replacing the green colour. 

 Through var. a this species approaches a variety of A. rutila, and 

 through var. /3, A. decipiens. It is readily distinguished from the 

 first by its smaller size, greater solidity, stronger striae and more 

 elongate form ; from the latter by its less acuminate form, white su- 

 ture, less solidity, and their widely-separated localities. 



20. ACHATINELLA AMPLA (PI. XXII. fig. 19). A. testa dextrorsa, 

 conico-ovata, polita ; anfractibus 5, rotundis ; sutura simplid, 

 vitta nigra fasciolata ; apertura magna, albida; labro externo 

 simplid acuto, interne incrassato ; columella brevi, coloris albi vel 

 rosei ; epidermate supra subviridi vel olivascente, subfusca in an- 

 fractu ultimo. 



I*g. ;!. pen. 



Hab Kolau, Oahu. 



Shell dextral, conically ovate, polished ; whorls 5, rounded ; su- 

 ture simple, banded with a black stripe ; aperture large and white ; 

 outer lip simple, acute, thickened within ; columella short, white or 

 roseate, terminating in a twisted plait; apex obtuse, roseate; epi- 

 dermis light green or olive above, of a deeper colour on the last 

 whorL 



t 21. ACHATINELLA ADAMSII (PI. XXII. fig. 20). A. testa dex- 

 trorsa, conico-acuminata; anfractibus 6, cum striis transversalibus 

 exiguis, longitudinalibus fortibus ; sutura valde depressa ; labro 

 expanso ; columella desinente in plicam solidam, abrupte tortam ; 

 testce lamina interna coloris plumbei, externa obscuri castanei t 

 irregulariter albide punctata et striata. 



Long. i?; lat. I; poll. ,, ] , '/, fy #&.* 



Hab. E. Mani, at the root of ferns. . <%/ 



Shell dextral, conically acuminate, whorls 6, finely striated trans- 

 versely, roughly striated longitudinally : suture deeply impressed ; Up 

 expanded ; columella terminating in a strong abruptly twisted plait ; 

 interior of shell of a leaden blue colour, exterior dark chestnut, irre- 

 gularly mottled and striped with white. 



This species makes the nearest approach in form to A. perdix of 

 Reeve, an immature specimen of which is figured in his Monograph, 

 fig. 43. The locality of this latter species is the almost inaccessible 



