128 UNIVALVES. 



detached for half its length, diameter at the larger 

 end two-tenths of an inch, length four or five 

 inches. 



This is by no means a common shell ; it is 

 found at Tor Cross, Devonshire, generally on 

 shells ; the head of the animal inhabiting it is 

 long, white, banded with pink and green, and has 

 two beatifully feathered tentacula, originating 

 from a single stalk. 



SERPULA Aquaria.* 

 WATERING POT. 



Specific character. Shell taper, straight, with 

 a convex disk at the summit perforated so as to 

 resemble the rose of a watering pot, having also 

 a radiated border ; the colour is white, with a 

 slight tinge of pale red or gray ; the shell, when 

 perfect, is nearly a foot long, and more than an 

 inch in diameter at the dilated summit. 



This most singular and beautiftil shell is rare ; 

 it is found in the East Indies. It bears a great 

 resemblance to the spout and rose of ^a watering 

 pot. 



GENUS. TEREDO. 



SHIP WORM. 



Generic character. \ Shell tubular, tapering, 

 flexuous, lodged in woody substances, with two 



* Plate VI. figure 3. 



