W O E M 3. 
41. Hehthuria, Feelers or tentacula flefhy. 
28- T'erebella, Feelers or tentacula capillary. 
E. Mtuth before : body furnljhed with arms. 
43. Triton.' 
48. Sepia. 
46. Clio. 
23. Onchidium. 
42. Lobaria. 
44. Lerneea. 
45. Scyllaa. 
Arms 12, divided; fome of them chcliferousi. 
Arms 8-10, befet with fuckers. 
Arms 2, membranaceous, extended like wings.- 
Arms 2, dilated, placed at the fides of tile 
head. 
Body above convex beneath flat, lobate. 
Arms 2 or 3 each fide, round flenucr; a 
caudal ovaries. 
Arms b, each pair at a dillancc. 
F. Mouth before ; body furnijbed with peduncles or feet. 
25. Aphrodita. 
27. Amphitrite. 
26. Spio, 
*9. Nereis. 
30. Naisi 
Body oval, furnifhed with eyes; feelers 3 
fetaceous annulate. 
Body proceeding from a tube and and annu- 
late: feelers feathered : eyes 6. 
Body proceeding from a tube and articulate j 
feelers 2, long finiple : eyes 2. 
Body long creejiing, with lateral pencilled 
peduncles or teet ; feelers fimple. 
Body long creeping; peduncles or feet with 
fimple bridles ; feelers o : eyes 2 or a. 
So. 
+ 9 - 
4i!. 
Si. 
SJ. 
G. Mouth placed beneath and generally central. 
Phyjfophora. 
Meduja. 
Lucernaria. 
Aferias. 
Echinus. 
Doily gelatinous, hanging by an air bubble. 
Body gelatinous, fmooth. 
Body gelatinous wrinkled and furntlhed 
with arm.--. 
Body coriaceous flat, generally radiate, and 
muricatc with papillas. 
Body ciuitaceous and covered with moveable- 
fpines. 
Hi. TESTACEA. Mollulca covered with a flielL ' 
A. Mullivalves : jbells with many valves. 
Chiton. 
Lepas. 
Valves placed in tranfverfe plates down the 
back. 
Valves unequal ; body feflile; 
S4« P bloets 
