ANNELIDA. 
717 
B. With a dorsal cirrus 
II. Antenna single. 
A. No dorsal cirrus . . . 
B. With a dorsal cirrus 
III. Antennae 2 
IV. Antennae 3. 
A. Head free 
B. Head concealed . . . 
V. Antennae 6 
2. Notocirrus. 
3. BlainvUlea. 
4. Nematonereis,. 
5. O^none, 
6. Lysidice. 
7. Aglaura, 
8. Plioceras, 
Genus iNCEiiTiE sedis : Zygolohus. 
Family V. AMPHINOMEA (7 genera). 
I. Feet biramose. 
A. With antennae and tentacles. 
a. Branchiae pinnatifid 1. Chhe. 
b. Branchiae arborescent 2. Amyhinome. 
c. Branchiae cirriform 3. Linophera. 
B. With one antenna 4. PupJirosyne. 
II. Feet imiramose. 
A. With antennae and tentacles 6. Ilipponoe. 
B. Antennae and tentacles wanting. 
a. Branchiae in rows 6. Lophonota. 
b. Branchiae in groups 7. Didymohranchus, 
Genera incertje sedis 2 : Ariste7tia, Ci’yptonotus. 
Family VI. NEPHTHYHEA (3 genera). 
I. Head bearing antennae. 
A. Antennae 4 I. Ncphthys. 
B. Antennae 2 2. Portdia, 
II. Antennae wanting 3. Diplohranckm. 
Family VII. NERINEA (6 genera). 
I. Feet biramose. 
A. Feet without cirri. 
a. No uncini 1. Nerine. 
b. Uncini present 2. Uncinia, 
B. Feeting bearing cirri. 
a. Inferior cim only 3. Aonis. 
b. Inferior and superior cirri. 
* No eyes 4. Malacocera. 
t Eyes present 5. Coloh'anchus, 
II. Feet uniramose 6. Pyyospio, 
Genera incerta3 sedis 2 : Pyyophyllum, Clytia. 
Family VIII. CIRRATULEA (6 genera). 
I. Branchiae on nearly all the somites. 
A. Branchiae both pedal and dorsal. 
a. The two sorts of branchiae appearing at the 
same time 1. Cirratidns. 
b. Pedal branchiae preceding the dorsal 2. Audouinia. 
B. Pedal branchiae only 3. Cirrinereis. 
