Three New Species of Teredo 15 
worms belonging to several species. No 7. fulleri were 
found in these blocks until September 1, 1923. The 
blocks removed from the water on that date contained 
one 20 mm. specimen. The block removed on September 
15, 1923, contained twenty specimens of T. fulleri, the 
largest with a tube 40 mm. in length. 
