16 M.A de Quatrefages on the Classification of the Annelides. 
b. Jaws scarcely ever present, sometimes 
denticles, never both together. 
** Cirri simple. 
Le Trank Mot Exsertile <5 00 wie sie 11. Syllidea. 
2. Pronk €xsertile’ [ye sie. an Pees as 12. Hesionea. 
lp Cairn lamella eprckemcks seen tteenee 13. Phyllodocea. 
tT Head conical and composed of distinct seg- ; 
PO GWES Aeon cta.c, ss biel ovinainad Ablala See 14. Glycerea. 
IB ASLOLMbOnY APPATAGUS 2. cis = + jae naiyi «04 wales 15. Polyophthalmea. 
Order II. Seprentarin. 
Regions of the body dissimilar. 
I, Segments of one or more regions very dissimilar 
HOKCAEN OCHEE Sy, acini al aint siete Suborder III. S. ABERRANTES. 
16. Chetopterea. 
II. Segments of the different regions always similar 
or subsimilar to each other ............ Suborder IV. S. PROPRIA, 
A. No branchize. 
aamvousete on thedeet) (Wane actee cline sae .... 17. Tomopteridea. 
b. With setze on all or nearly all the fect ..... . 18, Clymenea. 
B. With branchiz. 
a. Branchiz somatic. 
* Branchiz abdominal or abdominal and tho- 
racic. 
We ranc bie AHOrescentieaiys ses osx ons ae 19, Arenicolea. 
8. Branchiz cirriform or laciniate. 
a. With no prehensile cirri or tentacles. 
*+% Rami not very distinct ........+% 20. Opheliea. 
+f Rami very distinctly marked...... 21. Ariciea. 
b. Without prehensile cirri, but with ten- 
PACIES Here uone Gh oe Eta ite, mete 22. Leucodorea. 
= With! prehensile Curtis sep a6 peas a 23. Hermellea. 
+ Branchiz exclusively thoracic. 
a. Operculum formed of sctee............ 24. Pectinarea. 
[erg Islorrayorer gon in Gs Annie a Ot.or nen 25. Terebellea. 
ib; branchice cep mali. wii ieee vi tellin ete ees 26. Serpulea. 
Family 1. Aphroditea. (15 genera.) 
I. Elytra only dorsal. 
A. Elytra confined to a portion of the feet. 
Mea NOMGOISA CIEL rscc cists wer niophicn ke <p Ganeee 1, Pholoé. 
b. With dorsal cirri. 
* Dorsal cirri alternating with the elytra. 
a. Jaws none or rudimentary. 
a. With hairs on the feet ..... 0.000% 2. Aphrodite. 
b. No hairs on the feet. 
HSV ANGENNC. aie a-sora see eee tea ele ee 3. Hermione. 
slats 2: aliberim se seyetsterscciniatci mie wih wie ..e 4, Milnesia. 
8B. Jaws corneous. 
G24. ANCENM. wenn oes sveuaeevse Of Polyodontes. 
b. 3 antennie 
** With pseudobranchial tubercles .. 6. Acoétes. 
Tf With no pseudobranchial tubercles. 
1, Elytra all along the body ...... 7. Polynoé, 
