PLATE CXLV. 



of the timber than the usual sheathing of copper, and an extensive 

 manufactory has been of late established for the preparation of this 

 article : how far it mav prove ultimately successful we cannot pre- 

 sume to imagine, but perhaps both the paper and the copper might be 

 employed together with greater advantage than either of those articles 

 separately. 



For a more complete history of the Teredo than we might have 

 otherwise possessed, we are indebted to a remarkable circumstance 

 that occurred about sixty years since : the piles on the coast of Hol- 

 land were found to be injured to a very alarming degree, by the 

 ravages of this creature ; and beside several other ingenious tracts 

 upon their history and the calamity they had occasioned, Sellius 

 published an account of it, under the title of Histor'a Naturalis 

 Teredines, seu, Xylophagi Marini, in 1733 ; in this book the 

 anatomy of the animal is illustrated with Plates, and upon the whole 

 his observations deserve the attention of the curious reader. Another 

 account was also written by Baster, and published in the Trans- 

 actions of the Royal Society of London, in vol. 61, as quoted above. 



In our specimens, the apertures, or mouths of the shells, are very 

 perfect, and exhibit the same appearance as Kammer and Gmdm 

 seem to think peculiar to the species Utriadus ; namely, an oval 

 aperture divided by a partition in the middle. The shell is extremely 

 delicate, or thin, and very brittle. 



A3 



