M. A. de Quatrefages on the Classification of the Annelides. 21 
Family XIV. Glycerea (3 genera). 
I. Feet biramose. 
A. Rami approximate... 6... sce ee eee eee nes 1. Glycera, 
RGAE REM ws sien inte 01 g'0) Scere Site nore vis sie 8 eS 2. Goniada. 
TE, Heh MMIRAMOSO So ies Oe cle oe ae sie cca ne meetns 3. Hemipoda. 
GENERA INCERT# SEDIS 2: Gilycinide, Proboscidia. 
Family XV. Polyophthalmea (1 genus, Polyophthalmus). 
Family XVI. Chetopterea (1 genus, Chetopterus). 
GENUS INCERT SEDIS: Sprochetopterus. 
Family XVII. Tomopteridea (1 genus, Tomopteris). 
Family XVIII. Clymenea (2 tribes, 10 genera). 
I. Body in three regions (Tribe Clymeénea prop.). 
A. With an anal funnel. 
a. No respiratory ceca. 
* Cephalic plate developed. ...........e. 1. Clymene. 
+ Cephalic plate wanting or rudimentary.... 2. Lezocephalus. 
b. Respiratory czeca present ~........020s aces 3. Johnstonia. 
B. With an anal plate. 
a. With a cephalic plate ........... eens ees 4, Maldane. 
Ib, Noicephalie plate. \..c6sicccirwsts = or00 a eae wa 5. Petaloproctus. 
eC Neither plate nor tunnel asi. eee teas « 6. Ammochares. 
II. Body in two regions (Tribe Clymenca degrad.). 
28 O18 EEE cI (COY PGR UA EO ena ack eee ee 7. Clymenidia. 
B. Head not truncate. 
a. Head acute. 
* Posterior region with simple sete ........ 8. Arenia. 
+ Posterior region with only uncini ........ 9. Ancistria. 
ng PleaelaW abe stent teele ate ase 12s mein 5, sors 10. Clymenia. 
GENERA INCERT# SEDIS 3: Capitella, Notomastus, Dasybranchus. 
Family XIX. Arenicolea (2 genera). 
I. Branchiferous feet consecutive ............6+.- 1. Arenicola. 
II. Branchiferous feet separated by abranchiate ones 2. Chorizobranchus. 
GENERA INCERT SEDIS 2: Scalibregma, Polyphysia. 
Family XX. Opheliea (3 genera). 
J. Feet with a single branchia. 
ee On-thevmuiddle Tepton sy vere a werem slerew'sj a wieccae y= 1. Ophelia. 
B. Nearly on the whole body............002005 2. Travisia. 
II. Feet with several branchiz ........-..+20005- 3. Branchoscolex. 
GENERA INCERT SEDIS 3: Ophelina, Ammotripane, Sclerocheilus. 
Family XXI. Ariciea (5 genera). 
I. Trunk of ordinary form. 
A. Lower ramus of anterior feet bearing uncini. 
a. No antenn® ...ccsessseccsess erent « I. Arica: 
b. With antenmee ..eeeseeecseees Be esewes swe 2. Orbinia, 
