lis 



CHAPTER XXXVIII. 



OF THE TEREDO. GENUS XXXV. 



TEREDO. 



"Animal a Terebella, with two hemispherical calcareous valves or jaws, 

 truncated in front, angulated beneath. Shell tapering, flexuous, pene- 

 trating wood." — Linn. 



These shells are found lodged in wood lengthways with the 



grain, whereas the Pholas pusilla, which also is found buried 



in wood, bores its holes always across the grain. This shell 



bears some affinity to several of the Serpuke, but the animal 



differs considerably from every one. 



Linnseus describes only one species, the navalis; Gmeliu 



has added two more ; Turton has added none. Total, only 3. 



Adanson classes the only Teredo he knew along with Phola.^ 



pusilla. 



Lamarck divides this genus into two : 



FisTVLANA. Shell tubular, club-shaped, open at the smaller 



end, containing two valves not adhering (see Teredo 



Clava, Favanne, pi. 5. f. N). 

 Teredo. Shell tubular, cylindrical, open at both ends ; the 



lower furnished with two lozenge-shaped valves, and the 



upper end with two opercula (see Teredo navalis, Adans. 



><enegal,\. 19. f. 1.; and Sellii Tered. t. 1). 



