176 University of California Publications in Zoology [Vol. 13 



material obtained with trawl and tow-net during the explorations of 

 the Marine Biological Station of San Diego. Localities relative to 

 the former are entered in sequence from north to south and those 

 relative to the latter according to -the haul numbers under which the 

 collections are accessioned (see Ritter, 1914). 



Family SYLLIDAE 

 Syllis heterochaeta Moore 



SylUs heterochaeta Moore (1909b), p. 322, pi. 1.5, figs. 1-4. 



Moore described six eyes for this species. These, which agreed 

 with his description in other respects, had only four. Another 

 difference from Moore's description was that the setae instead of 

 being simply rounded had a subterminal depression. 



Collected from Bolinas Bay. 



Syllis alternata Moore 



Syllis alternata Moore (190Sb), p. 323, and (1909b), p. 321. 

 Collected from Ocean Cape, Yakutat Bay, Alaska; near Black 

 Point, San Francisco Bay; Pacific Grove; and San Pedro. 



Syllis armillaris Oersted 



Syllis armillaris Oersted (1843b), p. 24, figs. 90, 94, 102. 

 Collected from Point Loma ; and San Diego. 



Syllis (Pionosyllis) elongata Johnson 



Pionosyllis elongata Johnson (1901), p. 403, pi. 6, figs. 67-70; pi. 7, fig. 71. 

 Collected from Dillon's Beach; Black Point, San Francisco Bay; 

 Pacific Grove ; Monterey ; San Pedro ; and Pillar Point, Calif. 



Pionosyllis gigantea Moore 



Pionosyllis gigantea Moore (1908b), p. 32.5. 

 Collected from Bolinas Bay; and in haul LXVII, off San Diego 

 in 19 to 31 fathoms on grajnsh-yellow sand; one specimen from an 

 unlal0^^^l localitv. 



