Fic. 
Fic. 
Fic. 
Fic. 
Leal 
dS 
Pw 
PLATE 1. 
. Mertensia ovum, immature. Agassiz Laboratory, Newport, 
Rhode Island, September 7, 1895. 
. Pleurobrachia brunnea sp. nov., mature. In the ocean 5 miles 
off Barnegat Bay, New Jersey, October 16, 1904. 
. Pleurobrachia brunnea. Side view of apical sense-organ. 
. Pleurobrachia brunnea. View of one of the side branches of 
the tentacles. 
Drawn from life, by the author. 
