142 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



PLATE 22 



Figures 268 to 272, Psammolyce antipoda anoculata: Fig. 268, pro- 

 stomium and peristomium in dorsolateral view, from right side, 

 with peristomium pushed back to disclose prostomial lobe, x 

 18.5; Fig. 269, outline of an elytrum from posterior region, the 

 elongate lobe marks the inner lateral margin, x 25 ; Fig. 270, 

 twenty-fifth elytrum from right side in dorsal view, elytral 

 scar indicated, x 25; Fig. 271, bifid neuropodial seta from 

 second parapodium (most of them lack the bifid tip), x 290; 

 Fig. 272, a median neuropodial seta from a posterior para- 

 podium, with shaft somewhat spinose, x 130. 



Figures 273 to 279, Halosydna, species B: Fig. 273, a ventralmost 

 neuropodial seta from a median parapodium, x 290; Fig. 274, 

 a median elytrum from the right side in ventral view, the part 

 bounded by broken line is enlarged in next figure, x 12.5 ; 

 Fig. 275, part of median elytrum, near the anterior end, in- 

 cluding most of the area of the elytral scar, circles indicate 

 papillae, stippling pigmented pattern, the small area enclosed 

 in the rectangle is enlarged in the next figure, x 32; Fig. 276, 

 microtubercles from preceding, x 290 ; Fig. 277, a median para- 

 podium, setae indicated, x 32; Fig. 278, a dorsalmost neuro- 

 podial seta from a median parapodium, x 290; Fig. 279, a 

 long notopodial seta from same parapodium, x 290. 



