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 con- 

 fuse 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 



Figure 95f 



South half of Florida and the AVest Indies. 



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. 



Genus Teredo Linne 1758 



Similar to Bcmkia, but the pallet is made up of a single, paddle-shaped 

 piece. 



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? 



