xxi 



TMaria 13. ( Ver- F ERMILIA. 



metus kemisurrectus ? 



Phil. t. 9,/. \9.)f. 68. 

 Filograna, 13. 

 Vermicularis, 1 3 (h) . /. 66 



Triquetra, 14. Variety 

 Serrulata, 244, / 53. 

 Variety coiled up in 



(h) The variety Tubularia of Turton seems so very 

 distinct, that it was only after continual observation that 

 I assented to Mr. Berkely's synonyms in the Magazine 

 of Natural History. The Vermicularis has a thin keel, 

 (often with two additional smaller ones,) aud the mouth 

 seems armed above with an obtuse tooth-like projection, 

 (the shell being cylindrical cannot be confused with V. 

 Triquetra.) It is rarely found solitary, and the larger 

 end scarcely if at all, projects above the surface. In this 

 state it appears to be the Rugosa of the Conchological 

 Dictionary, p. 154, and bears much resemblance to Mul- 

 leri, but that species (at least the Vermicularis of Mon- 

 tague, which is declared by Mr. B. to be the same) has a 

 subquadrate look, for the top is somewhat flattened. 

 When aged the oarina and tooth totally disappear, the 

 shell rises at a considerable angle from the surface to 

 which the lower portion is attached, the margin of the 

 aperture becomes circular and reflected, and finally the 

 relics of the successively formed mouths produce the effect 

 of one tube growing out of the other. 



