Johnson — Polycliaeta. 
PLATE 11. 
Fig. 113. Tenth foot of Aricideopsis megalops, anterior aspect. The dense cilia- 
tion of the gill ( br .) is clearly shown. X 39. 
Fig. 114. Hooded uncinus of the same. X 321. 
« 
Figs. 115-118. Magelona longicornis. 
Fig. 115. Anterior end, showing one of the enormously elongated peristomial 
cirri, beset with papillae along the external side. Proboscis ( pr .) does 
not appear to be fully everted. X 8.5. 
Fig. 116. Eighth, ninth and tenth somites, dorsal aspect. In this region occurs 
the replacement of dorsal capillary setae by dorsal uncini. x 21. 
Fig. 117. Capillary seta, with double border, x 321. 
Fig. 118. Hooded uncinus. X 321. 
Figs. 119-121. Capitella dizonata. 
Fig. 119. Anterior portion, including thorax and first seven somites of abdomen, 
of immature female. 9 . Genital opening. X 9. 
Fig. 120. Dorsal seta from fourth somite. X 321. 
Fig. 121. Uncinus from ventral fascicle of fourteenth somite. X 321. 
