NO. 2 HARTMAN, BARNARD: RENTHIC FAUNA OF DEEP BASINS 125 



Chaetozone ?corona Berkeley and Berkeley, 1941 



Chaetozone spinosa corona Berkeley and Berkeley, 1941, pp. 45-46. 

 Hartman, 1955, p. 171. 



This species was collected in San Pedro, Santa Catalina and Santa 

 Cruz Basins. These individuals differ from those taken from shallower 

 depths (Hartman, 1955, p. 171) in that prostomial eyes are nearly or 

 altogether lacking. Yellow acicular spines, alternating with slender longer 

 capillary setae, are present in neuropodia and notopodia from the first or 

 second segment and continue throughout the rest of the body. 



C. corona differs from C. spinosa (see above) in being larger, paler, 

 and having parapodial spines in anterior segments instead of lacking 

 them. C. corona is elevated to specific rank for this reason. 



The species is more abundantly present in shallower bottoms of 

 southern California and has been previously recorded from the San Pedro 

 area (Hartman, 1955). 



Genus CAULLERIELLA Chamberlin, 1919 



Caulleriella gracilis (Moore) 1923 



Tharyx gracilis Moore, 1923, p. 187. 

 Berkeley and Berkeley, 1950, p. 57. 

 Berkeley and Berkeley, 1952, p. 37. 



This species was taken only in Santa Catalina Basin. Many more 

 come from shallower slope and shelf depths of southern California (un- 

 published records). Length of mature specimens is 29 mm and width 

 about 1 mm. Segments number about 110. The body is slender, barrel- 

 shaped in front through about 40 segments, then slenderer, with trans- 

 verse grooves marking the segmental intervals. The tail end tapers pos- 

 teriorly. The prostomium is acutely pointed, longer than wide, and lacks 

 eyes. Palpi are inserted dorsally, on the first setigerous segment and 

 immediately above and in front of the first parapodial pairs. 



Branchiae are numerous, inserted immediately above and slightly 

 behind the notopodial papillae; they are first present as a single pair on 

 the first parapodial segment. Notopodial setae are slender and capillary 

 in anterior segments. In postmedian segments they are partly replaced 

 by 2 or 3 thicker, acicular spines. Neuropodial setae are in transverse 

 series of 7 to 12; they are thicker and shorter than the corresponding 

 notopodial setae and alternate with blunt, acicular spines. Highly magni- 



