NATURAL HISTORY. 
27 
ROOM IX.] 
septum but one gradually becomes covered with cells for 
the larvae. In some of these, as the Epiphone Nidulans , the 
lower base is convex, and the hole is in its centre, while in 
others, as the nest of the Tatuce of Cuvier, which have the 
base flat, it is placed on the margin ; another kind formed 
by Polistes Chartergus , has the outer surface covered with 
large blunt tubercles, and these have several large holes 
on the sides, which are protected from the weather by ob¬ 
lique dependent tubercular plates. The cells of the 
latter wasps are filled with honey, as is the case with the 
Lecheguana , which is said to make a bell-shaped nest 
with a single central hole. In the bell-shaped nests of 
this kind, the septa are supported by their being attached 
to the sides of the outer case, and there is only one hole 
in each septum to form the communication, while in the 
nest of the true wasp, they are supported by columns 
formed between the different layers. 
Case 7 contains Mammalia in spirits, as Bats, Shrew 
Mice, Opossums, and some very young specimens of larger 
animals. 
Case 8 contains a series of Annelides, including Sea 
Worms, Lob Worms, Leeches, Planariae, and other kinds of 
Worms, in spirits. 
Cases 9—12 contain Mollusca in spirits, as various 
kinds of Cephalopodous Mollusca, the Cuttle Fish, 
or Sepia, the animal which affords the pigment so called; 
Octopus, and other genera of the order, as Cranchia, and the 
Ocythoe; the latter is often found in the Paper Nautilus, and 
thought by some to be its original inhabitant. Here also 
are the Pteropodous Mollusca, or those whose wing-shaped 
feet are on the side of their head, as the genera Hyalaea, 
Cleodora, Clio, Cymbulia, and Limacina. Likewise 
Heteropodous Mollusca, as the animals of the Cari- 
naria, and Pterotrachea; and some of the Gasteropo- 
dous Mollusca, which walk on a fiat expanded disk, in¬ 
cluding the Slugs, and the animals which inhabit spiral 
shells. 
Cases 10 and 11 contain the continuation of the Gaste- 
ropodous Mollusca. 
Case 12. The animals of Bivalve Shells, shewing the 
various forms which obtain in the different genera. Those 
of the Pearl Oyster, from the Island of St. Christopher, 
c 2 
