COMPLETE HARTMAN: POLYCHAETES FROM CALIFORNIA 95 



The type collection (from Sta. 2311) contained in all four species of 

 the genus: P. pinnata Ehlers (1), P. malmgreni Claparede (10+), P. 

 cirrifera Wiren (2), and P. pygmaeus (50+ ). Other species with which 

 it was associated are partly listed in Hartman (1955a, p. 77). 



Genus Boccardia Carazzi, 1895 



Type B. polybranchia (Haswell) 1885 



Boccardia basilaria, new species 



Plate 13, figs. 1-7 



Collections. The type was selected from VELERO IV Sta. 5161; 

 others are from Sta. 4802, and numerous other areas along the shelf 

 of southern California, mainly from Santa Barbara south through the 

 San Pedro area. 



This is a large species; total length is 30 to 45 mm; width 3 to 4.5 

 mm; segments number 100 to 120. The body is depressed in the anterior 

 region, widest near the middle and tapering posteriorly. Branchiae occur 

 on setigerous segments 2, 3and 4, and from the sixth setigerous segment 

 posteriorly through a long median region; they are absent from about 

 the last 50 segments. Fresh specimens are usually dusky in the anterior 

 region and along parapodial parts. 



The prostomium is short and truncate in front where it is medially 

 incised (PI. 13, fig. 1). There are 4 eyespots in trapezoidal arrange- 

 ment, the anterior pair the larger and wider apart ; the posterior pair 

 is between the palpal bases. The prostomial caruncle extends back as a 

 slender ridge to the end of the third setigerous segment. 



The first parapodia are biramous and smaller than those farther 

 back; the notopodium is smaller than the neuropodium. The modified 

 fifth segment is about twice as long as the others and it has biramous 

 fascicles; a notopodial fascicle has two kinds of hooks (PI. 13, fig. 1), 

 including an anterodorsal series of 3 to 5 larger falcigers (PI. 13, 

 fig 5) and 5 to 6 similar embedded ones, alternating with an inferior 

 series of about 6 bristle-topped spines (PI. 13, fig. 3) ; the largest ones 

 are at the posterior end of the series and there are 4 or 5 embedded ones. 

 The neuropodial fascicle is small, inconspicuous and provided with a 

 few long pointed slender setae. 



Neuropodial hooded hooks are first present in the seventh setigerous 

 segment; they number 7-9 to 12, arranged in a transverse row and are 

 accompanied at the inferior end of the series by a small bundle of 



