ACHATINA. 



Plate XIX. 



(Figures maguificd to twice the natm-al size.) 



Species 99. (Mus. Curaiug.) 



AcHATiNA Dysoni. AcJiat. testa cyVindraceo-ohlmujd, 

 ienui, liasin versus suhdilatata, spird hrevi, anfradibus 

 qtcingue, laviius, polilis, columella coniorta, lira cnllosd 

 marginatd, aperturd ohloiifjd, medio suhcontradd ; pel- 

 luddo-corned. 



Dyson's Achatina. Shell oylindrically oblong, tliiii, 

 slightly dilated towards the base, spire short, whorls 

 five in number, smooth, polished, columella twisted, 

 edged witli a callous ridge, aperture oblong, some- 

 what contracted in the middle; transparent horny. 



Pfeiffer, Pro. Zool. Soc. 184G, p. 33. 



Ilub. Hondm-as, (under decayed leaves) ; Dyson. 



The columella of this delicate transparent species is not 



truncated at the base, but edged with a callous ridge. 



Species 100. (Mus. Cuming.) 



AcH.VTiNA SPLENDIDA. Jdiut. fostd acummato-ovatd, 

 tenui, striatidd, nilidd, aiifradiius se,v ad septem, sub- 

 rotundatis, columella bred, contortd, subcallosd, vi.v 

 reflexd ; pelliiddo-coriwd. 



The splendid Achatina. S!iell acuminately ovate, 

 thin, finely striated, shining, whorls si.\ to seven in 

 number, subrotuud, columella short, twisted, rather 

 callous, scarcely reflected ; transparent horny. 



Anton, Verz. p. 44. Philippi, Abbild. Achat, p. 1. f. 11. 



Rob. Island of Juan Fernandez. 



A small bright transparent honiy shell, in which the 



columella is frequently turned up at the edge into a 



callous ridge. 



Species 101. (ilus. Cuming.) 



Achatina accincta. Achat, testd conico-ovatd, tenui, 

 au/radibus se.r, subplauo-convexis, e suturis arcuutim. 

 striatis, columella contortd, plicato-truncatd, aperturd 

 parviuscidd ; petluddo-corned. 



The gikded Achatina. Shell conically ovate, tliin, 

 ■whorls six. in number, somewhat flatly convex, ar- 

 cuatcly striated from the sutures, columella twisted, 

 plicately trimcated, aperture rather small; trans- 

 parent horny. 



MiGHELS, Pro. Nat. Hist. Soc. Boston, 1845, p. 20. 



Achatina Sandicicensis, Pfcifl'er. 

 Hub. Sandwich Islands. 



Dr. Pfeiffer notices that this group of Achatina: is 

 allied to the Achatinella ; it should be observed that they 

 are of very different substance and texture. 



Pig. 103. (Mus. Cuming.) 

 For description, see Genus TornatelUna. 

 For Achatina, Sp. 103, see PI. XXI. 



Species 103. (Mus. Cuming.) 



Achatina Bulimoides. Achat, testa ventricoso-ovatd, 

 spird subacuminatd, anfradibus quinque ad sex, subro- 

 tnndatis, columella tenui, contortd, aperturd suborbi- 

 culari ; corned, epidennide hdeo-oUvaced indutd. 



The Bulimds-like Achatina. Shell ventricosely ovate, 

 spire somewhat acuminated, whorls five to seven in 

 number, rather rounded, columella thin, twisted, 

 aperture nearly orbicular ; horny, covered with a 

 yellowish-olive epidermis. 



Pfeiffer, Pro. Zool. Soc. 184(), p. IKi. 



Ilab. Island of Juan Fernandez. 



A delicately formed species, cove 

 lowish-olive horny epidermis. 



thin yel- 



Species 104. (Mus. Cuming.) 



Achatina consimilis. Achat, testa conico-ovatd, sub- 

 vent ricosd, anfradibus quinque ad sex, subplano-con- 

 vexis, striatuUs, nitidis, columelld bred, redd, sub- 

 callosd ,- luteo-olivaced, pellucidd. 



The VERY SIMILAR Achatina. Shell conically ovate, 

 rather ventrieose, whorls five to six in number, rather 

 flatly convex, finely striated, shining, columella short, 

 straight, rather callous; yellowish-olive, transparent. 



Hub. Juan Fernandez ; Miller. 



Very similar in general aspect to the preceding species, 



but clearly distinct ; it is less ventrieose and the columella 



is nearly straight. 



