ANNELIDA. 
719 
**Antenn?e3. 
1. Tentacles 4. 
Eyes 4 13. Autolytus. 
Eyes 0 l4. TrtchosyUis. 
2. Tentacles 2 16. Iletcrosyllis. 
3. Tentacles 0 16. Gossta. 
/3. Head and buccal somite confounded. 
a. With frontal lobes. 
** 3 antennae and 4 tentacles determi- 
nable 17. Claparedia. 
1 8 18. Cystonereihs. 
** Antennae and tentacles ) 6 ...... 19. ^Iimrosyllis. 
indeterminable .... J4 ...... 20. Oophylax, 
v3 21. Isosyllis. 
5. No frontal lobes; an- (7 22. Thylaciphora. 
tennae and tentacles in- <6 ...... 23. A^nhliosyllis. 
determinable { 0 ....... 24. Tetraglena, 
b. With tubercles on the body 26. EurysylUs, 
B. No abdominal ciiri. 
a. With frontal lobes 26. 8ylli,ne. 
b. No frontal lobes. 
* Antennae 3. 
a. Tentacles 4 27. Myrianida, 
/3. Tentacles 2 28. loida. 
t Antennae 2 29. MycrosylUs. 
C. Neither dorsal nor abdominal cirri 80. Schmardia. 
II. Feet immoveable ; 81. Enjardinia. 
Genera iNCERTi® sedis 17 : Polyhostrimsy Sacconereis, Polynice, Diplocerceay 
Photocharis, BlacrocTicetay Syllia, Crithiday Anisocerasy Staurocep>haluSy Si- 
gamhray DiplotiSy Ephesitty Sph<Brodorumy PolUcita, Aporosyllis, Cirroceros. 
Family XII. HESIONEA (10 genera). 
I. Feet uniramose. 
A. Size comparatively large. 
a. Somites very numerous .................. 1. Myriana, 
b. Somites few. 
* Antennae 4 2. Ilesione. 
t Antennae 2 3. Fallacia. 
B. Size small. 
a. Antennae 4. 
* Tentacles 14 .r . . 4. Perihea. 
t Tentacles 8 ^ , t 6. Psamathe, 
§ Tentacles 6 6. Lopadorhynchus. 
b. Antennae 6. • 
* Tentacles 12 7. Podarcus. 
t Tentacles 10 8. Mania. 
II. Feet Siramose. 
A. Antennae 8 9. PseudosyUis. 
B. Antennae 4 10. Castalia. 
Genera iNCERTiE sedis 6 : Pisione, Oxydromusy Halimedey 
Cirrosyllisy Orseis, 
