NEPHTYIDAE FROM NORTHEAST PACIFIC — HARTMAN 151 



Proboscis large, clavate, usually without a median papilla (rarely 

 one of the paired papillae seems to occupy a median position) ; sub- 

 distally with 22 rows of papillae, 6 to 8 in a row, the more distal ones 

 about as long as those of the terminal forked set. Proximal portion of 

 proboscis smooth, glistening. 



Parapodia well developed throughout ; over half as long as body is 

 wide; provided with many silky, flowing setae, directed caudally. 

 Parapodial lamellae distinct. Dorsal and ventral cirri of first parapo- 

 dium subulate, exceeding in size the frontal antennae; notopodium 

 with lamellae, aciculum, and preacicular and postacicular fascicles of 

 setae ; neuropodium with reduced setal fascicle and minute aciculum. 

 Second parapodium differing from first in shape of dorsal and ventral 

 cirri, which are triangular with acute apex, and in having a larger 

 neuropodium. 



Recurved cirrus present from third setiger (fig. 64, e) to posterior 

 end of body ; with a small spherical papilla at its base near its origin 

 from the dorsal cirrus (fig. 64, f-h). Dorsal and ventral cirri with 

 thickened basal portion (fig. 64, e-h). 



Notopodial acicular notch present throughout but more or less 

 obsolete in posteriormost neuropodia (fig. 64, h). Postacicular la- 

 mellae broad, subtruncate (fig. 64, g, h) ', superior portion of median 

 neuropodial lamellae surrounding setal fascicle with a loose, high 

 collar (fig. 64, /-^). 



Setae of three kinds : A few plain capillary setae in superior and 

 inferior parts of postacicular notopodia and neuropodia; numerous 

 long, bristled, barred capillary postacicular notosetae and neurosetae 

 (fig. 64, c, d), and shorter, nonbristled, barred, capillary, preacicular 

 notosetae and neurosetae (fig. 64, i). 



Color in life iridescent pearl-gray to pale whitish. 

 Eolotype.—U.S.^M. no. 20320. 



Distributwn.— Dillon Beach, Calif, (type) ; northern and southern 

 California. Inhabiting clean, sandy beaches (see also p. 149). 



Systematic position.— Diflermg: from N. ciliata (O. F. MiUler) in 

 having proboscis proximally smooth, in lacking (usually) the median 

 dorsal papilla on the subdistal portion of the proboscis, in the distri- 

 bution of its recurved cirri which are present almost to the end of the 

 body, and in the proportions of the prostomium (see fig. 64, a, &). 



DisGussion.^Nephthys caeca ciliata of Berkeley (1935, p. 770) is 

 included here because of the "absence of an unpaired papilla on the 

 proboscis" and because the "posterior setae are unusually long". Also 

 its distribution (Elkhorn Slough) falls within the range of N. 

 calif omiensis as outlined above. 



