CYMBIUM. 
PuatE XXII. 
Species 14. (Mus. Cuming.) 
CymBium Nepruni. Cymb. testé subgloboso-ovatd, in- 
flata, aurantio-fulvd, epidermide fibrost olivaceo-nigra 
indutd, spird brevissimd, occulta, anfractibus superné 
in nucleo rotundato concavo contractis, ad marginem 
subproductis ; columella quadriplicata. 
NeEptuNE’s Cymprum. Shell somewhat globosely ovate, 
inflated, orange-fulvous, covered with a fibrous olive- 
black epidermis, spire very short, concealed, whorls 
contracted at the upper part into a round concave 
nucleus, slightly produced at the edge; columella 
four-plaited. 
Voluta Neptuni, Gmelin, Syst. Nat. p. 3467. 
Voluta Neptuni, pars, Lamarck. 
Cymba Neptuni, pars, Broderip. 
Cymbium Neptuni, pars, Adams. 
Cymba Tritonis, Broderip. 
Cymbium Tritonis, Adams. 
Vetus Neptuni, Gray. 
Cymbium olla, Lowe, fide Hanley. 
Hab. West Africa. 
Two species well distinguished by Gmelin, with the 
names Voluta Neptuni and Voluta navicula, were con- 
founded together by Lamarck, and, excepting Dr. Gray, 
by all subsequent writers. C. Neptuni, the species under 
consideration, is an orange-fulvous shell, covered with a 
thick olive-black epidermis. C. navicula (for which see PI. 
XXIV.) is of a white-mottled purple-red colour, with only 
a very slight epidermis. But a much more serious error 
has been committed by Mr. Hanley, and adopted by Mr. 
Lowe, in assigning these combined species to the Voluta 
olla of Linneus. The result of my examination of this 
question will be found under Cymbium olla at Pl. XXV. 
Dr. Gray considers Mr. Broderip’s Cymba patula (for 
which see also Pl. XXV.) the young of C. Neptuni, but I 
have not been able to satisfy myself on this point. 
February, 1861. 
