A C H A T I N E L L A . 



Species 4. (Mus. Cuming.) 



ACHATINELLA CORNEOLA. Acltat. testd obloiUJO-COIUcS, 



mifractibus septem ad oclo, convexis, siibiiliier concen- 

 trice impresso-siriatis, columelld profimde arcuatd, 

 margine productd et corUortd ; sitbpellueido-corned. 



The horny Achatinella. Shell oblong-conical, whorls 

 seven to eight in number, convex, finely concentri- 

 caUy impressly striated, columella deeply archetl, 

 produced and twisted at the edge; subtransparcnt 

 horny. 



Pfeiffer, Pro. Zool. Soc. 1845, p. 90. 



Hoi. Sandwich Islands. 



Notwithstanding the marginal plait-structure of the 



columella, this and the two following species are very 



distinct from the true Acliathiella. They belong rather 



to the small horny group of Achatiiue, among which I 



have akeady described some allied forms. 



Species 5. (Mus. Cuming.) 

 Achatinella clara. Achat, tedd pyrmiudali-conkd, 

 anfractibtis octo, convexis, mbangudis, conceutrice im- 

 presso-striatis, columella breviusculd, contortd, aper- 

 turd parvd ; pellucklo-corned, avfrnctnmn margine 

 jnxta stduras rufiUnealo. 

 The clear Achatinella. Shell pyramidally conical, 

 whorls eight in number, convex, rather narrow, con- 

 centrically impressly striated, columella rather short, 

 twisted, aperture small ; transparent horny, edge of 

 whorls next the sutures marked with a red line. 

 Pfeiffer, Pro. Zool. Soc. 1845, p. 90. 



Achatinella striatula, Gould. 

 Hab. Sandwich Islands. 



Distinguished ft'om the preceding species by its nar- 

 rower turreted form, and less prominent cokimeUar plait. 



Species 41. (Mus. Ciuning.) 



Achatinella pyramis. Achat, tedd actimiuato-conicu, 

 anfractibus octo, platdconvexis, superm temiimirgi- 

 natis, oblique minute driatis, columelld brevi, arcuatd, 

 aperturd parviusculd ; virescente-corned. 



The pyramid Achatinella. SheE acuminately coni- 

 cal, whorls eight in number, flatly convex, finely 

 margined round the upper part, obliipiely minutely 



striated, columella short, arched, aperture rather 



small ; gi-eenish horn. 

 Pfeiffer, Pro. Zool. Soc. 1845, p. 90. 

 IM, ? 



Distniguished by its more acuminate conical form. 



Species 43. (Fig. a, b, Mus. Cuming.) 



Achatinella rubens. Achat, testd acuminato-i 



dcctrorsd, solidiuscidd, anfractibus septem, planicon- 

 I'exis, lavigatis, vel obligue subirregalariter driatis, co- 

 lumelld plicato-contortd, aperturd parviusculd ; ru- 

 beiite-lacted, apice fused, epidermide fused fugaci iii- 

 dntd, apertures fatice pier umque rosed. 



The ruddy Achatinella. Shell acuminately oblong, 

 dextral, rather solid, whorls seven in number, flatly 

 convex, smooth, or obliquely somewhat iiregidarly 

 striated, columella plicately twisted, aperture rather 

 small ; ruddy cream-colour, brown at the apex, 

 covered with a brown fugacious epidermis, interior 

 of the aperture mostly tinged with rose. 



Gould, Pro. Boston Soc. Nat. Hist. 1845, p. 27. 



Hab. Sandwich Islands. 



The shells here represented vary materially in form, 

 but are doubtless different states of the same species. 



Species 43. (Mus. Cuming.) 



Achatinella perdix. Achat, testd ovatd, ventricosd, 

 teuuiculd, dextrorsd, spird exserid, apice subobtusd, 

 anfractibus sex, convexis, superne marginatis, lineis 

 impressis Jlexuosis oblique sculptd, columelld plicato- 

 contortd, sulcallosd ; albidd, olivaceo-fusco undique 

 picld et variegatd, suturis et columelld albis. 



The partridge Achatinella. Shell ovate, ventricose, 

 rather thin, dextral, spire exserted, somewhat obtuse 

 at the apex, whorls six in number, convex, margined 

 round the upper part, obliquely sculptured with 

 flexuous impressed lines, columella plicately twisted, 

 rather callous ; whitish, painted and variegated 

 tlu'oughout with ohve-brown, sutures and columella 

 white. 



Hah. ? 



This is a remarkable species, of a difl'ereut type from 



