ACH ATIN A. 
Plate VI. 
Species 18. (Mus. Cuming.) 
Achatina indotata. Achat, testa, oblongo-ovatd, tenui , 
ventrieosa, anfractibus septem, inferne Icevibus, superne 
granoso-striatis , columella arcuatd; lutescente-aUid, 
strigis latis castanets fulgnratis. 
The unendowed Achatina. Shell oblong-ovate, thin, 
ventricose, whorls seven in uumber, smooth round 
the lower part, granosely striated round the upper 
part, columella arched ; yellowish-white, marked with 
broad zigzag chesnut-brown streaks. 
Hab. West Africa. 
This shell, of which I have examined many specimens, 
is frequently confounded with A. zebra, from which it 
differs constantly in its proportions and the contour of the 
columella. The painting, though it assimilates in a re- 
markable degree with some varieties of A. zebra, has 
nevertheless a peculiarity of character about it. 
Species 19. (Mus. Cuming.) 
Achatina striata. Achat, testa fusiformi-oblonga, an- 
fractibus octo, longitudinaliter conspicueplicato-striatis, 
ad suturas cremlatis, columella, contortd, subelongato- 
produdd, aperturd parniusculd, angusld ; opaco-alba. 
The striated Achatina. Shell fusiformly oblofrg, 
whorls eight in uumber, longitudinally conspicuously 
plicately striated, crenulated at the sutures, columella 
twisted, somewhat elongately produced, aperture 
rather small, narrow ; opake white. 
Buccinum striatum, Muller, Verm. p. 149. 
Chemnitz, Conch. Cab. vol. ix. p. 36. pi. 120. f. 1028-9. 
Hab. Mexico. *■ 
M. Deshayes assigns the A. rosea, De Ferussac, and 
Dr. Pfeiffer the A. Mulleri of the same author, to the old 
Buccinum striatum of Muller ; the species under consi- 
deration seems, however, to agree far better both with 
Muller’s description and Chemnitz’s figures, excluding 
f. 1030, which is A. Mulleri. 
It is a shell of rather solid growth, opake snowy white, 
with the striae raised in prominent longitudinal folds. 
Species 20. (Mus. Cuming.) 
Achatina ornata. Achat, testa subfusiformi-oblonga , 
ventricosinscula, anfractibus octo, longitudinaliter 
creberrime elevato-striatis, ad suturas angust'e margi/ui- 
tis, columella breviuscula, abrupte truncata, aperturd 
parva, oblongd; fulvescenle, strigis brevibus fuscis 
irregularibus infra suturas obscure notatd. 
The adorned Achatina. Shell somewhat fusiformly 
oblong, rather ventricose, whorls eight in number, 
longitudinally very closely elevately striated, narrowly 
marginated at the sutures, columella rather short, 
abruptly truncated, aperture small, oblong; light 
fulvous-brown, obscurely marked beneath the sutures 
with short, irregular, brown streaks. 
Pfeiffer, Zietschr. fur. Malac. 1846. p. 117. 
Achatina costulata, Pfeiffer (not of Adams). 
Hab. New Granada. 
Curiously, but obscurely, marked with short scattered 
streaks striking out of the sutures. 
Species 21. (Mus. Benson.) 
Achatina Kraussi. Achat, testa oblongo-ovatd, anfrac- 
tibus septem, parum striatis ant decussatis, columella 
arcuatd et contortd ; nigricastaned, strigis angustis 
albidis remote fulgnratis, cohmelld et aperturce fav.ee 
cceruleo-albis. 
Krauss’s Acha'J'ina. Shell oblong-ovate, whorls seven 
in number, but little striated or decussated, colu- 
mella arched and twisted ; blackish-chesnut, marked 
with distant narrow white zigzag streaks, columella 
and interior of the aperture bluish-white. 
Beeve, Pro. Zool. Soc., 1842, p. 66. Conch. Syst. vol. ii. 
pi. 179. f. 19. 
Hab. Port Natal, Coast of Africa. 
Named in honour of Dr. Krauss of Stutgard, whose 
researches in South Africa have been productive of a 
valuable work on the Mollusca of that district. 
February, 1849. 
