PART I. — ZOOLOGY. 
23 
winkles. The limpet purple, ( Concholepas ,) which was formerly ar- 
ranged with the Patella , because of the large size of the mouth of its 
shells. It exactly resembles the left valve of the heart cockle, a bivalve 
shell, in shape, but it has the same small horn-like projection on the front 
of the outer lip. The mulberry shells, ( Ricinula ,) which are usually 
covered with spines, and have been thought to resemble the fruit. The 
Magillus , which, when the shell was first discovered, was thought 
by Guetard to be a stalactite, or mineral secretion ; more lately 
Lamarck placed it with the worm shells, but the animal scarcely 
differs from the Purpurce ; when the animal is young it has a thin 
shell of nearly the usual form, but of a white colour ; at a certain 
period of its growth, the animal deposits in the cavity such a quantity of 
calcareous matter as to produce the shell, in its subsequent growth, into 
a more or less elongated straight process, leaving only a small cavity 
for the body of the animal at its end. They exist in or on corals, and 
the extension of the shell is to allow the animal to keep its body level 
with the surface of the growing coral, that it may be enabled to procure 
its food. The Litiopce, which, continually floating about the ocean, are 
attached to the Gulph weed. The whelks ( Buccinum ). The needle 
shell ( Terebra). The Bullia , which has a very large animal for the 
size of the shell. 
Table 11. The Nassa. The Ringicula , which has been con- 
founded with the Auricula , but only differs from the Nassce in 
having the large plaits on the pillar. The Olives , Annularia , and 
butter shells, or Eburna, which are polished externally : as the 
camp olive, ( Oliva porphyria ,) from Panama; the Brazilian olive 
( O. Brasiliensis ). 
Tables 12—14. The genera allied to the Volutes. 
Table 12. The Melons, or Cymbium, w 7 hich often grow to a large 
size, and are used for domestic purposes by the Chinese and other 
Asiatic nations : as the crowned melon, and some of the Volutes . 
The young of the melons are produced alive and of a large size, the 
top of the spine is of an irregular shape like a nipple. 
Table 13. The Volutes; as the very rare courtier or red clouded 
volute ( V. aulica); the gambaroon ( Voluta Beckii) ; the imperial vo- 
lute ( V. imperialis ), from China ; long-spined volute ( V. ancilla ), 
from the Falkland Islands. 
Table 14. The rest of the volutes, and the Mitres , which dif- 
fer from the former in having a longer spire ; as the bishop mitre 
(M. episcop alis) ; the abbot mitre (M. tiara); the papal crown 
( Mitra Papalis) ; the orange flag ( Mitra vexillum) ; the cracked 
mitre (M. fissurata). The date shells (j Marginella), which are covered 
with a polished coat, like the cowries and olives, as the spotted and 
in ed date ( Marginella Persicula) ; the robin ( Marg . glabella ). 
Tables 15, 18. The Cowries ( Cyprcea) and their allied genera. 
Table 15. The Cowries, as the morning dawn, or orange cowry 
( Cyprcea aurantia ), used as an ornament by the inhabitants of 
the Friendly Islands, and therefore seldom procured without having 
been drilled ; the map cowry ( C. mappa) ; the Cyprcea Valentiana ; 
the mole ( Cyprcea talpa) ; the lapwing egg (Cyprcea mus ), with 
scarcely any teeth ; the white-toothed cowry ( Cyprcea leucodon) ; the 
money cowry ( C. Moneta ), still used as currency in Africa. 
