307 



relate in their famous report of the year 17.31 on the destruction ot the dykes ot Hol- 

 land by the ship-worm that Springertje were also to be found in millions." 



An examination of the figures and 10 of the monograph by Sellius (17.?3) and 

 of the text in paragraph 116, Chapter III, does not indicate that he was observing 

 Limnoria. The organisms he figures have but five pairs of legs, are of a greenish 

 color with red spots, have very large antennae and a tapering posterior end, and do 

 not appear to be flattened dorso-ventrally, l)Ut are more nearly round. The general 

 appearance is that of CoropliiiDii or some related amphipod. It is difficult to account 

 for the color, which Sellius calls "subviridis." The organisms were taken from piles. 

 The frequent occurrence of Corophium with Limnoria on piles leads one to believe 

 that the destruction was being caused by Limnoria, but that .Sellius was not careful 



Fig. 12.^. Limnoria in place attacking wood. X 5. 



