366 SERPULA. WORM-SHELL. Class VI. 



28. CONCA- Mont. Test. Br. Sup. 160. 



MERATA. 



* S. with a white, depressed, sub-pellucid, subor- 

 bicular shell ; of three irregular volutions, and 

 numerous dissimilar concamerations ; minute ; 

 rare. 



Taken up by the Amphitrite ventilabrum in 

 the formation of its tube. 



