ACHATINELLA.— Plate V, 



aud edge of the aperture stained within with lirid 



flesh-coloiu-. 

 MiGHELS, Pro. Boston Nat. Hist. Soc. 1845, p. 90. 

 Hab. Oahu, Sandwich Islands. 



The elegant zigzag painting of this species is very 

 similar to that of A. venusta. 



Species 37. (Miis. Cuming.) 



AcHATiNELLA TRISTIS. Ac/mt. testd globoso-ovatd, sub- 

 cylhidracea, soUdiuscvld, dextrond, spird brevi, apice 

 neutd, anfractibits convexis, corrugato-striatis, columelld 

 iircuatd, contorto-plicatd ; Jlavicante-lacted aiitfusces- 

 cente, epidermide nigrd fugaci indutd, apice fusco- 

 rubmte. 



The sad Achatixella. Shell globosely ovate, some- 

 what cylindrical, rather solid, dextral, spire short, 

 acute at the apex, whorls convex, corrugately stria- 

 ted, columella arched, with a twisted plait ; yellowish 

 cream-colour or brownish, covered with a black fuga- 

 cious epidermis, apex brown-red. 



Helix (CoMogena) iristis, Perussac, Prodrome, no. 435. 

 Jchatinella fuliginosa , Gould. 



Hab. Sandwich Islands. 



This and the following species belong to the same 

 )ieculiar type as A. ventulm of the preceding plate. 



Species 38. (Mus. Cuming.) 



AcUATlNELLA STRAlllNEA. Achat, testd acuminato-ob- 

 longd, sinistrorsd, anfraciibus convexis, oblique striatic, 

 columelld fortiter contorto-plicatd; drandned, inmia- 

 cidald. 



The straw-coloured Achatinella. Shell acuminately 

 obloug, sinistral, whorls convex, obliquely striated, 

 columella strongly twisted-plaited ; straw-coloured, 

 unspotted. 



Hab. Sandwich Islands. 



This species is of a peculiar light straw-colour, and 

 differs essentially in form from any of the preceding. 



Species 39. (Mus. Cuming.) 



Achatinella nucleola. Achat, testd abbreviato-ovatd, 

 subglobosd, dextrorsd, spird breviusculd, anfractibtts con- 

 vexis, subtiliter striatis, ad suturas creuulatis, columelld 

 arcuatd, contorto-plicatd; rubente-castaned. 



The kernel Achatinella. Shell shortly ovate, some- 

 what globose, dextral, spire rather short, whorls con- 

 vex, finely striated, crenulated at the sutures, colu- 

 mella arched, with a twisted plait; reddish-chestnut. 



Gould, Pro. Boston Nat. Hist. Soc. 1845, p. 28. 

 Achatinella brevis, Pfeiifer. 



Hab. Sandwich Islands. 



Very closely allied to A. ventulus, but sufficiently dis- 

 tinguished by its more globose form, lighter red-brown 

 colour, and more prominent abruptly trancated columella. 



40. (Mus. Cuming.) 

 Achatinella Mighelsiana. Achat, testd acmninato- 

 conicd, dextrorsd, anfractiius rotundatis, SJiperne obso- 

 lete marginatis, columelld valde contorto-plicatd ; opaco- 

 albd, lineis cinereis obscure notatd, anfractu ultimo 

 lined angnstd nigro-fiiscd cingulato, columelld et aper- 

 tur<e margine intus nigro-fusco tinctis. 

 Mighel's Achatinella. Shell acuminately conical, 

 dextral, whorls rounded, obsoletely margined round 

 the upper part, columella strongly twisted-plaited ; 

 opake-white, faintly marked with ash lines, last whorl 

 encircled with a narrow black-brown line, columella 

 and edge of the aperture stained within with black- 

 brown. 

 Pfeiffer, Pro. Zool. Soc. 1847, p. 231. 

 Hnb. Molokai, Sandwich Islands. 



Each example of this species in Mr. Cuming's collection 

 is encircled round the lower part of the whorls by a dark 

 line, which is concealed in all but the last, by the convolu- 

 tion of one whorl upon the other. 



Fig. 41. (Mus. Cuming.) 

 Achatinella turritella. Already described in thii 

 plate. For Sp. 41 see PL YI. 



