SERPULA. WORM-SHELL. Class VI. 



28. coNCA- Mont. Test. Br. Sup. l60. 



MERATA. 



* S. with a white, depressed, sub-peilucid, 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. 



