AC HAT IN x\. 



Species 28, (Mus. Cuming.) 



AcHATINA ALABASTEB. Achat, testd conico-ovatd, crassi- 

 mculd, anfractibus seplevi, sub lente mbmtmbne spi- 

 raliter driatia, suturis subimpressis, columella vix 

 iruncatd, aperttcrd parvd ; pellucido-aUd, fascia 

 auranlio-castaned medio cingulatd. 



The alabaster Achatina. Shell conically ovate, 

 whorls seven in number, very minutely spii'aUy stri- 

 ated beneath the lens, sutures slightly impressed, 

 columella scarcely truncated, aperture small ; trans- 

 parent white, encircled round the middle with an 

 orange-chestnut band. 



Deshayes, Anim. sans vert. vol. viii. p. 312. 

 Helix alabaster, Rang. 



Hab. Prince's Islands, West Africa. 



The bright chestnut band which encircles this species, is 



constant in all the examples I have seen. 



Fig. 29. (Mus. Cuming.) 

 For this species see Plate X. Sp. 35, A.fasciata, of 

 which the shell here figured (A. crenala, Swainson) is a 

 variety. 



Species 30. (Mus. Cuming.) 



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

 cidd, anfractibus septem, sub lenie ininutissime spiraliter 

 striatis, oblique subtUiter plicalo-striatis, ad suturas 

 conceritrice creuulatis, columelld vix truiwatd, aperturd 

 parviusculd ; pellucido-alld, fascia obscurd luteo-fuscd 

 wiedio cingulatd. 



Eeeve's Achatina. Shell conically ovate, rather thin, 

 whorls seven in number, very minutely spirally stri- 

 ated beneath the lens, obliquely finely plicately stri- 

 ated, concentrically crenidated at the sutures, colu- 

 mella scarcely truncated, aperture rather small ; trans- 

 parent white, encircled round the middle with an 

 obscure yellowish-brown band. 



Pfeiffek, Monog. Helic. viv. vol. ii. p. 247. 



Hab. Banks of the river Gaboon, West Africa. 



Distinguished fi-om A. alabaster, to which it is next 



allied, by its larger and lighter structure, sutural erenu- 



lations, and faint colouring of the band. 



Species 31. (Fig. a and b, Mus. Dennison.) 

 Achatina fusiformis. Achat, testd fusifonni-i 



tenui, centricosd, anfractibus septem, superne obscure 

 subangulato-prodactis, longitudinaliter creberrime sub- 

 irregulariter plicato-striatis, atriis minutis impressis 

 spiraliter indentatis, ad suturas crupato-marginatix, 

 columelld abrupte Iruncatd, aperturd angustd; stravd- 

 ned velfmcescente, eximie miniatd, strigis angustis hie 

 illic saturate pictd, intus pallide rosaced. 

 The fusiform Achatina. Shell fusiformly oblong, 

 thin, ventricose, whorls seven in number, obscurely 

 slightly angulated round the upper part, longitudi- 

 nally very closely but rather irregularly plicately stri- 

 ated, spirally indented with minute impressed stri;e, 

 crisply margined at the sutures, columella abruptly 

 truncated, aperture narrow ; pale straw-colour, or 

 broNvnish, delicately tinged with vermdion, and 

 painted here and there wth narrow streaks of darker 

 colour, pale rose within. 

 Pfeiffee, Pro. Zool. Soc, 1845, p. 75. 

 Hab. Moimtain of Coban,Vera Cruz, Central America. 



It is scarcely possible to do justice to the delicate co- 

 louring and plicated sculpture of this beautiful species, 

 the inner edge of the lip of which is stained with a peculiar 

 saturnine vermilion, whilst the entire shell is more or less 

 tinged with a warm hue of the same, excepting in the 

 variety represented at Fig. 31. b, which is of a bright silky 

 straw-colour. 



Species 32. (Mus. Dennison.) 

 Achatina Dennisoni. Achat, testd fusiformi-ovaid, 

 spird subacumiuafd, anfractibm sex, subrude exiliter 

 plicato-striatis, striis sublilUjus impressis deeussati-i, 

 apice subpapillari, columelld arcuatd et coutortd, 

 attenuate truncatd ; fuscescente, fusco apicem versus 

 variegatd, anfractu ultimo immaculato, fascid pallidd 

 obscurd cingulato, columelld pallide rosaced, supra 

 livido-caruleseente, fusco marginatd. 

 Dennison's Achatina. Shell fusiformly ovate, spire 

 rather acuminated, whorls six in number, somewhat 

 rudely faintly plicately striated, decussated with fine 

 impressed striae, apex somewhat papUlai-y, eohnnella 

 arched and twisted, attenuately tmncated ; pale 

 brown, variegated towards the apex with darker 



