140 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



PLATE 21 



Figures 255 to 264, Psammolyce myops: Fig. 255, twentieth elytrum 

 from left side in dorsal view, x 25; Fig. 256, twentieth para- 

 podium in anterior view, setae indicated, x 32; Fig. 257, a 

 superior neuropodial seta from third parapodium, x 290 ; Fig. 

 258, an inferior neuropodial seta from same parapodium, x 

 290; Fig. 259, second parapodium in anterior view, setae indi- 

 cated, x 32; Fig. 260, anterior end in dorsal view, the ventral, 

 elongate eyes concealed by the median ceratophore, indicated 

 by stippling, x 30; Fig. 261, prostomial lobe from right side, 

 showing relation of eyes to median ceratophore, x 30; Fig. 262, 

 a nearly entire, median neuropodial seta, x 290; Fig. 263, a 

 bifid median neuropodial seta, x 290; Fig. 264, an inferior 

 neuropodial seta from a median parapodium, x 290. 



Figures 265 to 267, Halosydna parva: Fig. 265, surface papillae 

 from sixth elytrum, near outer, lateral margin, x 290 ; Fig. 266, 

 sixth elytrum from right side in dorsal view, x 25 ; Fig. 267, 

 a neuropodial seta from a median parapodium, x 290. 



