CYMBIUM. 
Pratt XXIV. 
Species 15. (Fig. a, 6, c, Mus. Cuming.) 
CymBium NavicuLa. Cymd. testé globoso-ovatd, inflatd, 
rufo-fuscd, maculis albidis plus minus marmorata, spird 
brevissima, apice feré occulto, anfractibus superne an- 
guste contractis, margine producto, intus circa apicem 
excavato-canaliculato ; columella triplicatd. 
Tue Boat Cymprum. Shell globosely ovate, inflated, 
red-brown, more or less marbled with white spots, 
spire very short, apex almost concealed, whorls nar- 
rowly contracted round the upper part, margin pro- 
duced, excavately channelled round the apex; colu- 
mella three-plaited. 
Voluta navicula, Gmelin, Syst. Nat. p. 3467. 
| 
Cymbium Persicum-maculatum, Martini. 
Voluta Pepo, Solander. 
Cymba Neptuni, pars, Broderip. 
Fetus navicula, Gray. 
Hab. West Africa. 
Martini was the first to recognize the distinction be- 
tween this species and the preceding, but the irregularity 
of his nomenclature requires that a preference should be 
given to the name of Gmelin. ‘The shell of C. Neptuni is 
of a uniform fulvous colour, covered with a thick, dark, 
fibrous epidermis, while that of C. xavieula is of a charac- 
teristic red-brown mahogany-colour, mottled throughout, 
in all stages of growth, with whitish spots. 
March, 1861. 
