ACHATINELLA.— Plate II. 



gined at the sutm-es, columella conspicuously cal- 

 lous-toothed, apes rather small; olive-green, apex, 

 columella, and interior of the aperture white. 



Hub. Sandwich Islands. 



Chiefly distinguished by its elougately conical form, and 



liarht olive-green colouring. 



Species 14. (Mus. Cmning.) 



AcHA'i'iNELLA PERVERSA. Acliat. testa globoso-conicd, 

 siiiktrorsd, apkem versus subacuminatd, columella cal- 

 losd, plam-dentatd, labro mbmcrassato ; olivaceo-fuscd, 

 lineis vitHdi-niffrieaniibus spiralibus et obliquis mbir- 

 regnlariter decussatd, supra et infra sukiras opaco-albu. 



The reversed Achatinella. Shell globosely conical, 

 sinistral, rather acuminated towards the apex, colu- 

 mella callous, flatly toothed, lip somewhat thickened ; 

 olive-brown, rather irregularly decussated with spii-al 

 and oblique greenish-black lines, opake-white above 

 and below the sutui-es. 



Swain'son, Zool. Illus. Second Series, pi. 99. f.'2. 

 Turbo lugubris sinistrorsus, Chemnitz. 

 A. decora, var. Pfeift'er. 



Hab. Sandwich Islands. 



The opake white sutures are very characteristic in this 



species, and it has moreover a peculiar cross-lined style of 



painting. De Ferussac figured it with A. decora, and Dr. 



Pfeift'er quotes it as a variety of that species. 



Species 15. (Mus. Cimiing.) 



Acil.iTiNELLA SIJIULANS. Achat, testd globoso-conicd, 



siiiktrorsd, apicem versus acutd, anfractibus superiie 



roitspicue marginatu, columelld brevi, plano-callosd ; 



nlhd, lineis perpaucis fuscescentibus citu/ulatd, fascia 



intense fused circa columellam, columelld labroque 

 pallida purpnrascentibus. 



The allied Achatinella. Shell globosely conical, 

 sinistral, sharp towards the apex, whorls conspicu- 

 ously margined at the sutures, columella short, flatly 

 callous; wliite, encircled with a very few light 

 brown lines, with an intense brown band around the 

 columella, lip and columella tinged with light purple. 



Hab. — -? 



The colouring of this species is so like that o{ A. decora, 

 that it might be taken for a variety ; yet it diifers in form, 

 the spii-e being more acuminated, and the last whorl not 

 so broad and ventricose. 



Species 16. (Mus. Cuming.) 



Achatinella spirizona. Achat, testd elongato-conicd, 

 dextrorsd, subumbilicatd, anfractibus septem ad octo, 

 convexis, obliqiie plicaio-striatis, striis ad suturas sub- 

 rudibus, columella contorto-plicatd, aperturd parvius- 

 cnld; intense bruimed, zona albd infra suturas, epi- 

 dermide temd fuscescente indutd. 



The spiral-zoned Achatinella. Shell elougately 

 conical, dextral, slightly umbilicated, whorls seven to 

 eight in number, convex, obliquely plicately stri- 

 ated, strife somewhat rude at the sutures, columella 

 with a twisted plait, aperture rather smaU ; intense 

 brown, with a white zone beneath the sutures, 

 covered with a thin brownish epidermis. 



Ferussac, Hist. Moll.pl. 155. f. 14, 15. 

 Achatinella acuta, Swainson. 



Hab. Oahu, Sandwich 



This and A. turritella represent an abnormal form ol' 

 the genus, differing from the type in having more whorls 

 and in not possessing a similarly polished painted exterior. 



