88 Trans, Acad. Sci. of St. Louis 
EXPLANATION OF PLATE 
PLaTe V 
Fig. 4 secon Scene many stenomorphic specimens of Teredo 
lis from Warren, R. I. 
Fig. 2. aa showing attack of normal Teredo navalis from Fall 
River, Mas 
Fig. 3. Tube of a ee gouldi in a shingle block. 
