26 
GUIDE BOOK TO THE BRITISH MUSEUM. 
Table 46. The lamp shell (Terebratula) ; Duck muscles {Lin- 
gula) ; the Crania and JDiscince , the upper valves of which have been 
mistaken by some authors for limpets; the bones of cuttle fish 
(Sepia); the cartilaginous lances of sea leaves (Loligo), sometimes 
called sea pens. The fossil JBelemnites, which are supposed to be similar 
to the small horny process at the end of the cuttle fish bone. The 
crozier shell ( Spirula) f and the different kinds of Ammonites and 
Nautili. 
THE NORTHERN ZOOLOGICAL GALLERY. 
FIRST ROOM. 
This room may be for the present considered as an appendage to the 
two foregoing. 
The Wall Cases. A series of the skulls of the larger Mamma- 
lia to illustrate the characters of the families and genera, and of the 
nests of birds, and the arbours of the two species of Bowser Bird ; the 
one ornamented with fresh- water shells and bones, and the other with 
feathers and land shells, &c. 
The Table Cases. The tubes of Annulose Animals, the casts 
of the interior cavities of Shells, and various specimens of shells, illus- 
trative of the diseases and malformation of those animals. 
Tables 1 , 2 contain the shelly tube formed by the Serpulce , which 
have often been confounded with shells. The tubes of sand, agglu- 
tinated together by the juices of the animal, formed by the Amphitrite. 
Tables 3, 4 contain specimens of shells, exhibiting the different 
size of different specimens in their adult age, the changes of form which 
occur in the shell during the growth of the animal, the changes 
which take place in the cavity of shells, the manner in w r hich shells 
are mended by the animal after any injury, and also how the animal 
covers any excrescence which attaches itself to a shell, or removes any 
part which is in the way of its enlargement. 
Tables 5, 6 contain a series of plaster casts of the interior cavities 
of different shells of living mollusca, to assist in determining the 
casts of fossil species often found in rocks. 
Tables 7, 8 contain a series of models on an enlarged scale, and 
some specimens of minute bodies, formerly called Nautili , but now 
formed into a group under the name of Foraminifera. 
In one of the Cases are the shells used for cutting cameos, showing 
the places where they are cut from. 
SECOND ROOM. 
The Upright Cases round the room contain the collection of 
Reptiles and Batrachian Animals, preserved dry and in spirits, 
and the Table Cases the first part of the collection of the hard pail; of 
Radiated Animals, including the Sea Eggs, Sea Stars, and 
Encrinites. 
