ACHATINA 
Plate XIX. 
(Figures magnified to twice the natural size.) 
Species 99. (Mus. Cuming.) 
Achatina Dysoni. Achat, testa, cylindraceo-oblongd, 
tenui, basin versus subdilatatd, spira brevi, anfractibus 
quinque, Iceoibus, politis, columella contorta, lira, callosa 
marginatd, aperturd oblonga, medio subcontracta ; pel- 
lucido-corned. 
Dyson’s Achatina. Shell cylindrically oblong, thin, 
slightly dilated towards the base, spire short, whorls 
five in number, smooth, polished, columella twisted, 
edged with a callous ridge, aperture oblong, some- 
what contracted in the middle ; transparent homy. 
Pfeiffee, Pro. Zool. Soc. 1846, p. 32. 
Hob. Honduras, (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.) 
Achatina splendida. Acliat. testa acuminato-ovatd, 
tenui, striatuld, nitidd, anfractibus sex ad septem, sttb- 
rotundatis, columella brevi, contorta, subcallosa, vix 
reflexd ; pellucido-corned. 
The splendid Achatina. Shell acuminately ovate, 
thin, finely striated, shining, whorls six to seven in 
number, subrotund, columella short, twisted, rather 
callous, scarcely reflected ; transparent horny. 
Anton, Verz. p. 44. Philippi, Abbild. Achat, p. 1. f. 11. 
Hab. Island of Juan Pernandez. 
A small bright transparent horny shell, in which the 
columella is frequently turned up at the edge into a 
callous ridge. 
Species 101. (Mus. Cuming.) 
Achatina accincta. Achat, testa conico-ovatd, tenui, 
anfractibus sex, subplano-convexis, e suturis arcuatim 
striaiis, columella contorta, plicato-truncatd , aperturd 
parviuscula ; pellucido-corned. 
The girded Achatina. Shell conically ovate, thin, 
whorls six in number, somewhat flatly convex, ar- 
cuately striated from the sutures, columella twisted, 
plicately truncated, aperture rather small; trans- 
parent horny. 
Mighels, Pro. Nat. Hist. Soc. Boston, 1845, p. 20. 
Achatina Sandwicensis, Pfeiffer. 
Hab. Sandwich Islands. 
Dr. Pfeiffer notices that this group of Achatince is 
allied to the Achatinellee ; it should be observed that they 
are of very different substance and texture. 
Pig. 102. (Mus. Cuming.) 
Por description, see Genus Tornatellina. 
Por Achatina, Sp. 102, see PI. XXI. 
Species 103. (Mus. Cuming.) 
Achatina Bulimoides. Achat, testa ventricoso-ovatd, 
spira subacuminatd, anfractibus quinque ad sex, subro- 
tundatis, columella tenui, contorta, aperturd suborbi- 
culari ; corned, epidermide luteo-olivaced induta. 
The Bulimus-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. 1846, p. 116. 
Hab. Island of Juan Pernandez. 
A delicately formed species, covered with a thin yel- 
lowish-olive homy epidermis. 
Species 104. (Mus. Cuming.) 
Achatina consimilis. Achat, testa conico-ovatd, sub- 
ventricosd, anfractibus quinque ad sex, subplano-con- 
vexis, striatidis, nitidis, columella brevi, recta, sub- 
callosa ; luteo-olivaced, pellucidd. 
The very similae Achatina. Shell conically ovate, 
rather ventricosc, whorls five to six in number, rather 
flatly convex, finely striated, shining, columella short, 
straight, rather callous ; yellowish-olive, transparent. 
Hab. Juan Pernandez ; Miller. 
Very similar in general aspect to the preceding species, 
but clearly distinct ; it is less ventricose and the columella 
is nearly straight. 
June, 1849. 
