yu 
- Capulus, Mont. (Patella Hungarica, Lin.) detached from its shell, and 
seen on one side. 
a. The foot. d. The trunk. 
6. A sort of ruff which this foot | ee. .. tentacula. 
has in front. : «+ liver and apart of the viscera, 
ec. The muscle which attaches which occupy the bottom 
the foot to the shell, of the shell. 
- Onchidium, under yiew. 
. Parmacella, seen on the back: the shell has been taken away, and only 
its impression remains. 
. The horned Planorbis, with its shell. 
- The animal of the Cypreea. 
Conus. 
. Emarginula entire. 
- Nervous system of the Fissurella. 
- Animal of the Crepidula, detached from its shell, seen above; the ab- 
domen and branchial cavity in their natural position. 
. Shell of the Crepidula seen underneath. 
a. Plate which retains the point of the abdomen. 
- Animal of the Crepidula, detached from its shell, and the upper parti-, 
tion of its branchial cavity turned back to shew the branchie. 
- Testacellus halyotideus, animal and shell. 
