CONTENTS. 
CHAPTER IU.—PLANARIA.—Continued. 
c.—PLANARIA FECUNDA, 
d.—PLANARIA FLUSTRE, 
e.—PLANARIA VORAX, 
f.—PLANARIA GRAMINEA, 
g-—PLANARIA CUNEUS, 
h.—PLANARIA PRASINA, 
PLANARIA NIGRA, 
a.—PLANARIA SERPENTINA, 
b.—PLANOIDES FUSCA, 
CHAPTER IV.—NAIS—LUMBRICUS, 
I.—Nals, : 
§ 1.—NAIs LACUSTRIS, 
2.—NAIS PROBOSCIDEA, 
T.—Lumpricus, 3 
§ 1.—LUMBRICUS CIRRATUS, 
b.—LUMBRICUS MAXIMUS, 
2.—LUMBRICUS MAXIMUS, VAR. 
c.—LUMBRICUS CAPITATUS, 
d.—LUMBRICUS LITTORALIS, 
e.—LUMBRICUS TERES, 
f-—LuMBRICUS HIRSUTUS, 
CHAPTER V.—NEREIS, SPIO, 
I.—NEREIS, 
§ 1._NEREIS TERES, 
2.—NEREIS HIRSUTA, 
3.—NEREIS LINEATA, 
4.—NEREIS BULLATA, 
5.—NEREIS PARVA, 
6.—NEREIS ARIES, 
7.—NEREIS REMES, 
8.—NEREIS ELLIPSIS, 
9.—NEREIS FULGENS, 
10.—NEREIS FOLIATA, 
11.—NEREIS CONTORTA, 
12.—NEREIS MONOCEROS, 
13.—NEREIS PUNCTATA, 
II.—Spio, . 
§ 1.—SpIo SETICORNIS, 
2.—SPIO CELATA, 
CHAPTER VI.—APHRODITA, 
§ 1.—APHRODITA CIRROSA, 
2.—APHRODITA SQUAMATA, 
