definita ; apertura oblongo-ovata ; columella for liter tuber culata 

 cum extremitate purpurea ; labro simplici ; colore luteo ; apertura 

 interne alba vel nigro-purpurea ; anfr. superioribus partim notis 

 coloris umbrosi obscure signatis ; sutura cum vel sine vitta nigra. 

 Long. IB; lat.|poll. { ...^ X~t ty* 



Hab. Molokai. ,/V 



Shell dextral, polished ; whorls 5, convex, margined above ; suture 

 well-defined ; aperture oblong-ovate ; columella strongly tuberculate, 

 with purple tip ; lip simple ; colour yellow, upper whorls tinged with 

 umber ; sutures with or without a black band ; aperture within white 

 or dark purple. 



This species shows two varieties with and without the sutural 

 band. The aperture of the first within is purple, of the latter it is a 

 pure white. 



J^x 



38. ACHATINELLA soROR (PI. XXIII. fig.^38). A. testa sini- 

 strorsa, conica, turritiformi ; anfractibus 7, rotundis ; sutura valde 

 impressa; apertura subovata, parva; labro simplici; columella bre- 

 vissima, in dentem contortum plicatum terminante ; epidermate 

 tenui supra fusco- cornea et infra pallido-cornea. 



Hab. Mani. 



Shell sinistral, conically turreted ; whorls 7, rounded ; suture deeply 

 impressed ; aperture subovate, small ; lip simple ; columella very 

 short, terminating in a twisted plicate tooth ; epidermis thin, dark 

 corneous above and light corneous below. 



Var. a. Last whorl white, shell solid. 



Length ^ ; breadth ^ inch. 



Var. /3. Shell thin, dark corneous, poh'shed. 



Length ^ ; breadth ^ inch. 



This species is the complete analogue of A. acuta found in Oahu ; 

 it has a more ventricose aspect, and the striae are more developed in 

 the A. acuta. 



39. ACHATINELLA OBESA (PL XXIII. fig. 39, 39 a). A. testa 

 depressa conica; solida, inflata; anfractibus 5, ventricosis, striatis; 

 sutura bene definita ; apice acuto ; apertura ovata ; columella plica 

 forti alba pr&dita ; labro intus incrassato ; cuticula coloris um- 

 apertura alba. 



Hab. Hale a ka la, Mani. 



Shell depressed, conical, solid, inflated ; whorls 5, rounded, striate ; 

 suture well-marked ; apex acute ; aperture ovate ; columella with a 

 strong white plait ; lip thickened within ; colour of epidermis dark 

 umber ; aperture white. 



Var. agglutinans. 



Shell somewhat carinated on the last two whorls, with the keel ex- 

 tended by agglutinations, giving it a pagoda-like form. 



B 



