450 THE OCEAN WORLD. 
In PLate XXI. we have represented some interesting species. 
Conus imperialis (Fig. 1.) is a fine species, of white colour, with bands 
of a greenish yellow or tawny colour, ornamented with transverse, cord- 
like, articulated lines of white and brown. One of the largest species 
is Conus geographus (Fig. II.), which sometimes attains the length of 
six or seven inches; it is shaded white and brown. 
Among the non-crowned species, we have represented in Fig. III. 
Conus tessellatus, common in the Indian Ocean. Its anterior part is 
violet in the interior. The spots with which it is surrounded are of 
a fine red or scarlet, or, in short, a red lead colour upon a white 
ground. 
Conus ammiralis, of which three varieties, Figs. IV., V., and VI., 
are natives of the seas which bathe the Moluccas ; they are beautifully 
marked varieties, of a brownish citron colour, marked with white 
spots nearly triangular, with tawny bands painted in very fine tracery. 
This species has been, and is still, much sought after by collectors, 
and presents many varieties besides those represented. 
Among the shells, which seem almost ready to become cylindrical, 
may be noted Conus nvbilis (Fig. VII.), a rare shell of yellowish colour 
approaching citron, ornamented with white spots. The golden drop, 
Conus textile (Fig. VIII), is yellow in colour, ornamented with 
waving longitudinal lines of brown, and white corded spots edged 
w:th tawny colour. The glory of the sea, Conus gloria maris (Fig. 
IX.), is white in colour, banded with orange, and reticulated with 
numerous triangular white spots edged with brown. This is a native 
of the East Indies, and one of the most beautiful shells of the whole 
group. 
The fourth family, Bucinide, contains numerous genera, as 
examples of which we may instance Odiva, Harfa, Cassis, Purpura, 
Nassa, Terebra, Eburna, and Buccinum. 
The genus O/zva is so named from its resemblance in form to the 
olive. Its nearly cylindrical shell is slightly spiral, polished, and 
brilliant, as in the Cowries; its opening is still long and narrow, strongly 
notched in front, its edge columellar, swollen anteriorly into a kind of 
cushion, and striped obliquely in all its length. 
These Molluscs belong to the seas of warm countries, where they 
frequent the sandy bottoms and clear waters. They creep about 
with much agility, reversing themselves quickly when they have been 
overturned ; they live upon other animals, and are flesh-eaters. They 
are, in fact, taken at the Isle of Tranu by using flesh as bait. The 
colours of the shell are very varied, and sometimes fantastically 
streaked, Oliva erythrostoma (Fig. 275) is ornamented externally 
