NO. 2 hartman: polychaetous annelids 281 



The first setigerous ring is only about half as long as the second ; it 

 is provided with a papillar parapodium, from which a fan-shaped fascicle 

 of 6 to 8 pointed setae emerge; the fascicle resembles those farther back 

 but is more spreading; this ring lacks neuropodia. From the second, both 

 notopodia and neuropodia are represented. The first are provided with 

 longer, slender, pointed setae (pi. 24, fig. 60) superiorly and shorter, 

 somewhat spatulate setae with a long, pointed mucron (pi. 23, fig. 52) 

 inferiorly. A median thoracic notopodium has 7 or 8 longer setae, about 

 7 spatulate setae. Thoracic neuropodia are provided with only long- 

 handled uncini in which the largest tooth is long (pi. 23, fig. 51); a 

 median neuropodium has about 11 of these hooks. Abdominal parapodia 

 have short uncini above and slender setae below. Uncini number about 8 

 in a series in the second abdominal segment ; each has a long, main tooth 

 (pi. 23, fig. 50) resembling that in thoracic hooks. Setae are pointed, 

 limbate, number 8 or 9 in a fascicle. 



The tube is slender, closely fitting the body of the occupant; extern- 

 ally it is covered with small shell fragments, attached usually on edge, 

 so as to lie more or less in transverse layers. Tubes occur in crevices of 

 sponge and ascidian clusters, and sometimes resemble the small bits of 

 sand and shell sometimes lodged in these places. The tube may be only 

 slightly longer than the length of its inhabitant. Color in life and pre- 

 served is pale to white. 



C. minuta is characterized in its very small size, measuring only 

 about 10 mm long; it has few abdominal segments, numbering only about 

 26; the tentacular crown has a low palmate membrane, only about one 

 third of the total length of the crown, and there are only 6 or 7 pairs of 

 radioles ; spatulate setae have a long mucron. 



Holotype. — ^AHF no. 67. 



Type locality. — Dillon Beach, California, intertidal, in rocky habitats. 



Distribution. — Central California. 



Pseudopotamilla occelata Moore 



Moore, 1905, pp. 559-562, pi. 37, figs. 8-14; Hartman, 1938, pp. 19, 25, 

 26, pi. 2, fig. 6. 

 Several individuals come from rocky crevices at Tomales Point, ocean 

 side, and from Dillon Beach. The tentacular crown is usually brilliantly 

 colored, transversely banded with red or maroon. The tube is typically 

 slender but irregular, leathery, chitinized, covered with fine sand particles 

 on the outside, and the distal end is transversely rolled up when the occu- 

 pant is withdrawn. The dorsal edge of the tentacular base is deeply cleft 

 (Hartman, 1938, pi. 2, fig. 6), and some radioles, especially those on the 



