58 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 25 



the prostomial antennae in having a long, clavate base and a short, 

 slender tip. The second segment is the first normal one, has dorsal and 

 ventral cirri, and fascicles of notopodial and neuropodial setae. 



Paleanotus bellis is known from the northeastern Pacific Ocean from 

 western Canada to western Mexico, in littoral zones. 



Family Phyllodocidae 



This family is represented by at least 35 to 40 species in 14 genera. 

 Most of them are difficult to identify from preserved collections because 

 generic characters concern the exact number and locality of the anterior- 

 most tentacular cirri, which are frequently lost on fixation, and the 

 surface structures of the eversible proboscis which is often not properly 

 everted. Dorsal and ventral cirri, which provide less reliable characters, 

 are also frequently lost from study collections. Most of the strikingly 

 colored patterns in life fade rapidly, and the excessive amounts of mucus 

 secreted when specimens are killed, account for considerable shrinking 

 of preserved materials. Composite setae, which occur in all members of 

 the family, are not highly diagnostic in their gross structures, and the 

 minute details are not readily distinguished. 



Key to Genera and Species 



1. With 2 pairs of tentacular cirri 2 



1. With 4 pairs of tentacular cirri 6 



2. Dorsal cirri auricular ; body maculate and larger .... 

 Eteone pacifica 



2. Dorsal cirri not auricular; body not maculate and smaller . 

 3 



3. Dorsal cirri triangular and foliaceous . . Eteone lighti 



3. Dorsal cirri subquadrate in shape 4 



4. Prostomium semicircular ; body brownish 5 



4. Prostomium trapezoidal, longer than wide ; body pale . 

 Eteone dilatae 



5. Prostomium without eyes ; inhabits bays or estuaries . 

 Eteone balboensis 



5. Prostomium with eyes; not limited to bays 



Eteone calif ornica 



6. Parapodia biramous 7 



6. Parapodia uniramous 8 



