178 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



PLATE 18 



Figures 1 to 8, Aglaophamus dicirris (436-36): Fig. 1, everted 

 proboscis in dorsal view, x 28 ; Fig. 2, anterior end including 

 prostomium and 6 segments in dorsal view, x 40; Fig. 3, twenty- 

 eighth parapodium in anterior view, x 112; Fig. 4, furcate seta 

 from twenty-eighth parapodium in full view, x 1340; Fig. 5, 

 part of a middle postacicular seta near base of spinous region, 

 in frontal view, x 2852; Fig. 6, part of a preacicular barred 

 seta, from broadest region, in frontal view, x 2840; Fig. 7, part 

 of a barred seta in lateral view, x 2840; Fig. 8, cross section 

 of a barred seta at region shown in fig. 6, x 2840. 



