ACHATINA. 



Species 6. (Mus. Cuming.) 



AcHATlNA PAl'i'RACEA. Achat, testa oblongo-ovatd, tenui, 

 anfractibus sex, minute (kcttssatim gi'anulatis, adsuturas 

 marginatU, columella leviter contortd, parum truncatd; 

 fmcescejite, fusco nebnlatd, columella interditm sub- 

 rosaced. 



The paper Achatina. Shell oblong-ovate, thin, whorls 

 six in number, minutely decussately granulated, mar- 

 gined at the sutures, columella slightly twisted, but 

 Uttle truncated ; light brown, clouded with darker 

 brown, columella sometimes pinkish. 



Pfeiffer, Pro. Zool. Soc. 1845, p. 74. 



Hab. Banks of the river Nun, Africa. 



A light semi-transparent shell, of which the interior is 



slightly iridescent. 



Species 7. (Mus. Cuming.) 



AC£ 



\A BALTEATA. Achat, testd acuminato-oblomjd, 

 siibficsiformi, crassiusculd, anfractibui octo ad novem, 

 subplicato-striatis, utidique creberrime minute granula- 

 ns, columella peculiariter arcuatd, et contortd, abrupte 

 truncatd; flavescente, fasciis casfr/iieis lougitudinalibus 

 apicem versus iinctd, fascia ■sjiinili inlerniptu, subin- 

 distinctd, medio cingulatis, cohinuUd tt aperturm fauce 

 c(?ruleHcente-albd. 

 The belted Achatina. Shell acuminately oblong, 

 somewhat fusiform, rather thick, whorls eight to nine 

 in munber, slightly plicately striated, very closely 

 min\itely granulated, columella peculiarly arched and 

 twisted, abruptly truncated ; yellowish, stained 

 towards the' apex with chesnut longitudinal bands, 

 and encircled round the middle with a rather indis- 

 tinct interrupted spiral band, columella and interior 

 of the aperture bluish-white. 

 Hab. Banks of the river Gambia, Africa. 



Very beautifully minutely granulated throughout, and 

 characterized by a faint spiral band, in a manner which 

 obtains some specific importance on account of its singu- 

 larity. 



Species 8. (Mus. Cuming.) 



Achatina f 



teiitricox, 



Achat, testa fiislfoniii-obloiigd, siib- 

 teiitii, nunc crassiusculd, anfractibus 



octo, lavibus, apicem versus obscure granulato-striatis, 

 ad suturas vix crenulatis, columeUd subcontortd, an- 

 gusti truncatd ; lutescente-albd, fusco profuse latistri- 

 gatd et nebulatd, cohimelld et apertura: fauce albis. 



The smoked Achatina. Shell fusiformly oblong, 

 rather ventricose, sometimes thin, sometimes thick, 

 w'horls eight in number, smooth, obsciu'ely granosely 

 striated towards the apex, but slightly crenidated at 

 the sutures, columella rather twisted, narrowly trun- 

 cated ; yeUowish-wliite, profusely broadly streaked 

 and clouded with brown, columella and interior of 

 the aperture bluish-white. 



De Ferussac, Hist. Moll. pi. 124 A. f. 1. 

 Eadem varietates. 



Helix borbonica, De Ferussac. 

 HMx zebrina, Ue Ferussac. 

 HeVu- Manritiana, Quoy and Gaimard. 

 Achatina Cuurunpa, Lesson. 



Hab. Mauritius. 



An extremely variable species ; in addition to the typical 

 specimen here tigiu-ed it has been necessary to represent 

 (PL III.) a variety of smaller size which is of frequent 

 occurrence, and one (PL XL) of singidar umbdicated 

 growth. The variety Fig. 8, b. is of rather light structure, 

 and extremely constant in this peculiarity. MM. Quoy 

 and Gaimard distinguished it as a separate species with 

 the name B. Mauritiana, but it is found associated with 

 the larger kind and differs immaterially in form or sculpture. 

 This variety is, however, a very characteristic one, and is 

 found abundantly in some parts of Mauritius. "When the 

 Samarang touched at that island on its return to England, 

 Sir David Barclay, an eminent collector residing at Port 

 Louis, presented Sir Edward Belcher with some thirty or 

 forty of them alive from his garden, scarcely differing from 

 one another in size or painting. 



Li the variety figured at PI. XI, a very remarkable one, 

 the shell is pressed down, as it were, and the whorls are 

 turned in a manner to form a large umbilicus. Specimens 

 of this variety are not very uncommon, and may be seen in 

 different stages of growth. 



Species 9. (Mus. Cuming.) 

 Achatina reticulata. Achat, testd eloiigalo-ovatd, 

 snbfusifuruii, crassd, anfractibus novem, plicato-rugosis, 

 et sirinfis, ad suturas concentrice crenatis, columella 



February, 1849. 



