The _Bulimus hæmastomus_ is a most beautiful shell; it is a native of
Guiana, and is frequently as much as four inches in length. The most
singular part of its natural history is the large size of the egg of
the animal in comparison with its magnitude; it is said to equal that
of a moderate-sized pigeon.
[Illustration: _Bulimus hæmastomus. Pupa mummia._]