Cl.VI. SABELLA. CONCRETE-SHELL. 369 



ments of shells. The tubes sometimes above 

 three inches long. 



Found on the western coasts of Anglesey ; 

 near Criccaeth, Caernarvonshire; and near 

 Yarmouth. It covers the rocks for a consider- 

 able space, near low-water mark. Tab. xcv. 

 fig- I- 



Lin. Syst. 1.269. 



Mont. Test. Br. 541. 



3. PENICIL- 



Amphitrite ventilabrum. 



Pallas Misc. Zool. t. 10. 



LUS. 



Gm. Lin. 3111. 



f-1- 





* S. shell membranaceous, erect, rooted ; with 

 a long slender tube, tapering to the lower 

 extremity ; diameter at the top a quarter of an 

 inch; length six or seven inches. Animal, the 

 Amphitrite 'ventilabrum, p. 90. 



Lin. Syst. 1268. 



Pallas Misc. Zool. t. Q. 



4. GRANU' 



Mont. Test. Br. 544. 



f.3,2.1 



LATA. 



* S. with a single shell, not attached to any 

 thing, simply bent, composed of brown grains 

 of sand ; length two or more inches ; diameter 

 at the largest end, three eighths of an inch. 

 Animal, an Amphitrite. 



VOL. iv. 2 B 



