50 



SERPULA fiagelliformis. 



TAB. DCXXXIY.—Jig. 2 & 3. 



Spec. Char. Attached by its whole length ; tor- 

 tuous^ increasing very gradually towards the 

 mouth ; shell thin^ smooth, with slightly raised 

 annular undulations ; mouth round, its dia- 

 meter half aline. 



Syn. Vermilia flagelliformis, Morris, Catal. 67. 



r ouND attached to shells in the sandy beds of the London 

 clay in Bracklesham Bay, by F. E. Edwards, Esq. It is 

 one of the most simply formed species we know, and differs 

 from the recent S. vermicularis, Linn,, in the total absence 

 of a keel. A Sei-jmla occurs in the crag which only differs 

 in being rather larger than the biggest specimen (fig. 2.) 

 from the clay. 



SERPULA exigua. 



TAB. DCXXXIV.— /g^. 4. 



Spec. Char. Attached throughout, involute, dis- 

 coid, smooth, minute ; tube depressed, en- 

 larging gradually towards the aperture, which 

 is transversely elongated ; lines of growth 

 oblique. 



Attached to a small Natica found at Barton by Mr. Ed- 

 wards. 



