THE 



NATURAL HISTORY 



OF 



BRITISH SHELLS. 



PLATE CXLV. 



TEREDO NAVALIS. 



SHIP WORM. 



GENERIC CHARACTER. 



Animal Terebella, with two calcareous hemisphaerical valves cut 

 off before, and two lanceolate ones. Shell roundish, flexuous, and 

 capable of penetrating into wood. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell very thin, cylindrical and smooth. 



Teredo navalis : testa tenuissima cylindrica laevi. Gmd.p* 3147. 



334. sp. 1. 

 Teredo, Linn. Syst. Nat. 12. 2. p. 1267. n. 1. 



A 2 



