NO. 2 H ARTM AN : QUANTITATIVE SURVEY 201 



in an anterior series, accompanied by longer, slenderer ones in a posterior 

 row. Farther back, notopodia have only slender setae, and from about 

 segment 20 they are accompanied by fewer, shorter furcate spines (Fig. 

 9). Neurosetae are similar to notosetae but shorter. 



Asclerocheilus califomkus is characterized by its greatly prolonged 

 parapodial lobes in posterior parapodia. It is known from slope and can- 

 3'on depths of southern California, in mud. 



Asclerocheilus, unknown sp. 



Collection :?>VA.2>b\6 (2). 



The larger specimen, in two pieces, measures 14 mm long by 1.6 mm 

 wide in the thoracic or widest region. Segments number at least 62. The 

 body is broadest and conspicuously rugose in the anterior third, and it 

 tapers posteriorly, where the epithelium is less roughened. The pros- 

 tomium is T-shaped, widest in front and laterally prolonged as a pair of 

 horns which are continuous with the prostomium ; a pair of conspicuous 

 ocular patches occupies much of its first half, nearly meeting medially. 

 The prostomium is posteriorly slightly overhung by the first short seg- 

 ment, a plain, incomplete ring surrounding the lobe only middorsally and 

 laterally; the second segment is the first complete ring and its ventral 

 part forms the lower lip. 



The first two setigerous segments have thick, curved acicular spines, in 

 an anterior series, accompanied by a posterior series of capillary setae, 

 present in both notopodia and neuropodia. From the third segment the 

 setae are smooth, long, capillary, and accompanied by conspicuous series 

 of furcate setae, in both notopodia and neuropodia. Each furca has un- 

 equally long tines, with long, slender spinelike teeth along the inner cut- 

 ting edges. Dorsal and ventral cirri, as well as branchiae, are totally lack- 

 ing. Parapodia are clearly biramous, with notopodia and neuropodia rep- 

 resented by low, broad lobes, from which the setae project ; the superior 

 bases of setal fascicles are bounded by pale, glandular ridges. The pygid- 

 ium terminates in 2 longer and 2 shorter, cirriform processes, directed 

 laterally. 



1 hese specimens differ from known species of the genus in having 

 ocular areas on the prostomium (see Uschakov, 1965:292). 



n he species has been taken only oil East End, Santa Catalina Island, 

 in 88 fms, in glauconitic sand. 



