Notes on the Stenomorphic Form of the Shipworm 
EXPLANATION OF PLATE 
Piate IV 
External view of both valves of a ee specimen 
Teredo navalis. Actual size .94 mm 
Internal view of both valves of a stenomorph specimen 
Teredo navalis. Actual size .94 m 
External view of h valves of a normal specimen 
: .3 mm. 
ew of bot 
Teredo navalis. Actual size 1 
External view of left valve of a stenomorph specimen 
Bankia gouldi. Actual size 2.7 m 
87 
of 
of 
of 
Pallets of stenomorph Teredo navalis shown in fig. 1. Actual 
i 5 mm. 
