94 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



Parapodia do not differ greatly between middle and posterior regions 

 of the body. Those of anterior segments have dorsal and middle lobes 

 about equally long and triangular in shape; thereafter the dorsal lobe 

 diminishes in size but continues to be triangular, with the dorsal cirrus 

 inserted at its upper base. Setae in anterior segments are largely com- 

 posite spinigers. Neurosetae of segments 7 to 20 occur in full tufts and 

 the corresponding notopodial fascicles are much slenderer. Homogomph 

 falcigers are first present in about notopodium 35, number two to a 

 fascicle and are accompanied by one or two composite spinigers and a 

 single slender black aciculum. The homogomph falcigers have an ap- 

 pendage that is lens-shaped, longer than wide, and they are denticulated 

 along one edge, not much different from those of Nereis anoculis 

 (above) ; they are about one and a half times as thick as the accompany- 

 ing spinigers. 



Neuropodia have heterogomph spinigers in supra-acicular positions, 

 and both these and heterogomph falcigers in subacicular position ; the 

 latter have an appendage 4 times as long as wide and the longest ones 

 are in the uppermost part of the bundle. Dorsal and ventral cirri are 

 simple cirriform throughout, with the first inserted at the base of the 

 dorsal lobe and the second inserted on the lower side of the parapodium 

 near the body wall. 



The genus Eunereis is known from the eastern Pacific Ocean for 

 two other species, E. longipes Hartman (1936, p. 479) and E. patagonia 

 (Mcintosh, 1885, p. 228). The first occurs in central California in 

 intertidal zones. It has 4 prostomial eyes and the proboscis has paragnaths 

 on areas VII-VIII arranged as 6 cones in a transverse row. The second 

 occurs in southern South America; it is not known to have homogomph 

 falcigers in notopodia. 



Eunereis caeca has been recovered only in Long and East Cortes 

 Basins, in 900 and 980 fms. 



Genus CERATOCEPHALA Malmgren, 1867 



Ceratocephala loveni pacifica, new subspecies 

 (Plate 8, figs. 1, 2) 



The type comes from West Cortes Basin (Sta. 5939) ; others are 

 from East Cortes, San Clemente and Long Basins, and from the Patton 

 escarpment. 



The largest individuals, perhaps nearly mature, are small and meas- 



