122 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



PLATE 12 



Figures 141 to 145, Eusigalion hancocki: Fig. 141, detail of mar- 

 ginal fringe from ectal edge of a median elytrum, x 66; Fig. 

 142, outer lateral portion of elytrum from fiftieth segment, in 

 dorsal view, x 25 ; Fig. 143, outline of elytrum in ventral 

 view, with attached branchial appendage, x 25 ; Fig. 144, 

 prostomial lobe and part of peristomial segment, x 30 ; Fig. 145, 

 outline of forty-sixth parapodium, setae omitted, x 32. 



Figures 146 and 147, Eusigalion spinosum: Fig. 146, portions of 

 shaft and appendage of an articled supraacicular neuropodial 

 seta, x 290; Fig. 147, part of a larger serrated notopodial seta 

 from forty-sixth parapodium, x 290. 



Figures 148 to 152, Eusigalion hancocki: Fig. 148, a smooth, smaller 

 inferior notopodial seta from forty-sixth parapodium, x 290 ; 

 Fig. 149, a simple spinose neuropodial seta from same para- 

 podium, X 290; Fig. 150, tip of a neuropodial seta from same 

 parapodium, x 290; Fig. 151, articulated composite neuropo- 

 dial seta from same parapodium, x 290; Fig. 152, part of a 

 subacicular neuropodial seta from the same parapodium, x 290. 



