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TEREDINIDAE 467
Pallets about Vs inch in length. Cones shallow-cupped, with smooth,
not drawn-out edges. Cones very crowded at the distal end. Do not confuse
with B. goiildi which is more abundant and a larger species. Uncommon.
Subgenus Fhimidella Clench and Turner 1946
Bankia fimbriatula Moll and Roch Fimbriated Shipworm
South half of Florida and the AVest Indies.
Figure 95f
Pallets !4 to I inch in length. Cones deeply cupped, with beautiful,
comb-like serrations on the edges. It has been found on the Pacific side of
the Panama Canal, and those specimens were named Bankia canalis Bartsch.
piece.
Genus Teredo Linne 1758
Similar to Bcmkia, but the pallet is made up of a single, paddle-shaped
Teredo navalis Linne Common Shipworm
Both coasts of the United States. Europe and Africa.
Shell like that in Bankia and subject to many minute variations. Each
of the 2 calcareous pallets is spathate and compressed, but typically sym-
metrical. The leathery blade is urn-shaped, widening regularly from a stalk
of medium length, then tapering somewhat toward the tip, which is decidedly
excavated. The base of the blade is calcareous, but approximately the distal
third is normally covered by a yellowish or brownish chitinous epidermis.
A very common and destructive species found boring in wood.
Teredo bartscbi Clapp Bartsch's Shipworm
South Carolina to north half of Florida to Texas. Introduced to San
Diego, California.
Shell close to T. navalis, but with the auricle typically semi-circular
rather than sub-triangular in outline. Pallets: stalk long; blade short and
deeply excavated at the top. Only the distal half of the blade is invested
with periostracum, which is light horn-colored and semi-transparent, per-
mitting the calcareous portion to be seen within as an irregular, hourglass-
shaped structure with a deep sinus on either side. A common species.
Teredo diege?isis Bartsch San Diego Shipworm
Southern half of California. And south?