COMPLETE HARTMAN: POLYCHAETES FROM CALIFORNIA 105 



Genus Cirratulus Lamarck, 1801 



Type C. cirratus (Miiller) 1776 



Cirratulus cirratus (Muller) 1776 



Cirratulus cirratus Berkeley and Berkeley, 1950, p. 56; Berkeley and 

 Berkeley, 1952a, p. 31. 



Collections. Most specimens come mainly from northern and central 

 California, from intertidal rocky habitats, usually from muddy crevices, 

 and from eel grass associations ; occasional specimens come from sub- 

 intertidal shelf depths of southern California. 



Length ranges from 15 to 30 mm. The prostomium has paired 

 transverse series of eyes numbering 3 to 6 on a side. Neuropodial acicular 

 spines are first present behind the sixth, or not before the eleventh 

 segment. Notopodial acicular spines are first present farther back. In 

 posterior segments the neuropodial spines number only one or two in a 

 row and are accompanied by an equal number of slenderer, distally 

 pointed setae; the corresponding notopodial spines are more numerous 

 and much slenderer but otherwise similar to the corresponding ones in 

 ventral series. 



Cirratulus cirratus is known from world-wide areas in intertidal or 

 shallow depths. It is largely replaced in southern California by cirra- 

 tulids of other genera. 



Cirratulus cirratus spectabilis (Kinberg) 1866 



Promenia spectabilis Kinberg, 1866, pp. 254-255. 



Cirratulus robustus Johnson, 1901, p. 423, pi. 14, figs. 149, 150. 



Cirratulus spectabilis Berkeley and Berkeley, 1952a, p. 32. 



Collections. Numerous individuals come from intertidal areas of 

 northern California to Alaska. 



Length is 30 to 45 mm. Median and posterior segments tend to be 

 moniliform because the segments are less crowded than in related 

 species. The prostomium is semicircular, rounded in front, and has 

 paired series of eyespots as in the stem species. Dorsal tentacles are 

 inserted on the first setigerous segment, number 10 or more on a side, 

 and leave a middorsal space that is narrower than the insertion of a set. 

 Lateral branchiae are present from the first setigerous segment, inserted 

 immediately above the notopodial ridge through 15 segments. There- 

 after the insertion moves upward to a dorsolateral position, much as in 

 the stem. 



