CYMBIUM. 
Pruate IV. 
Species 1. (Fig. 1 d, Mus. Brit.) 
Species 2. (Fig. 2 c and 2d, Mus. Brit.) 
In this Plate are figured in juxtaposition C. Hthiopi- 
eum and C. regium, in an early stage of growth. It will 
be seen, on comparison, that these two species, hitherto 
confounded by British authors, are really distinct, as 
shown by Schubert and Wagner in their Supplement to 
the ‘Conchylien Cabinet’ of Martini and Chemnitz. C. 
Aithiopicum, Fig. 1 d, is of a more ventricose and con- 
strictedly convoluted form, the striae of growth are more 
gathered in by a broader and more forcibly contorted de- 
velopment of the columella and its plaits ; the banded paint- 
ing of dark blotches is characteristic, and the scales are 
more numerous, In C. regium, Fig. 2c, 2d, these pecu- 
liarities are replaced by others of good specific value, a 
shorter and less constricted columella, more distant scales, 
a more obtusely square form, and a very characteristic 
painting of blotches of white; and the differences are 
plainly observable in a state modified only by age in the 
adults of the two species represented in Plates I. and II. 
December, 1860. 
