DEPARTMENT OF ZOOLOGY 
103 
Deer, representing the animals in the four seasons. The case 
at the north end contains a group of Mountain Sheep, and that 
at the south end contains a group of Polar Bears. 
Under the North Gallery and along the sides of this court 
are arranged table cases, numbers one to sixteen containing 
shells. 
COLLECTION OF MOLLUSKS. 
The collection of Mollusca contains 7000 species or more. 
It is believed to represent fairly well the subject of conchology. 
The collection is shown in 34 table cases, in the South Court. 
In the arrangement of the families Dr. Paul Fischer s classifi- 
cation in its reverse order has been followed. 
Case i. — This case contains a small collection of Brachio- 
poda; these are not Mollusca though in external form they 
resemble the Lamellibranchiate shells. The Brachiopods were 
very numerous in earlier geological times. The Mollusca proper 
follow the Brachiopods in Case i, the important families repre- 
sented are the Anatinidcs, PandoridcB, Tellinidcs and the Tere- 
dinidcB (Ship Worms), Piddocks, etc. Also examples of injury 
done submerged wood by the ship worms; PholadidcB (Burrow- 
ing Shells); Myidcs (Soft-shelled Clams). 
Case 2. — Solenid(B (Razor Shells); PsavyiynohiidcB) Dona- 
cidcB (Wedge Shells). 
Case 3. — VeneridcB, a very large family which contains 
many beautiful shells; ChamidcB. 
Case 4. — CaTdiidcB (Cockle Shells); TvidcicfiidcB (Giant 
Clams) ; two very large examples of this family can be seen in 
a separate case. 
Case 5. — Unionidcs (River Mussels). 
Case 6. — UnionidcB continued. 
Case 7. — In this case is represented a collection of pearl- 
bearing shells from Wisconsin, also a number of pearls. It con- 
tains also representatives of the ArcidcB (Ark Shells). 
Cases. — Mytilidcs (Mussels); AviculidcB (Wing Shells), 
this family includes among other species the “Pearl Oyster,” of 
which specimens are here shown. 
Case 9. — Pectinid^s (Scallop Shells); Spondylid^ (Thorny 
Oysters) ; these two families contain many shells which are in- 
teresting on account of their forms and their brilliant colors. 
