PLATE IX. 



SERPULA SPIRORBIS. 



GENERIC CHARACTER. 



Animal a Terebella, or whlmble worm. Shell tubular, adheres to 

 other bodies, as shells, stones, &c. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Small, orbicular, spiral or wreathed like a cornu ammonis ; convex 

 above, flat beneath. 



Serpula Spirorbis, testa regulari splraliorbiculata : anfractibus supra 

 introrsura subcanaliculatis sensimque minoribus. — 

 Gmel. Linn. Syst. Nat, Conch, p. 3740. 5. 

 Vermiculus exiguus albus nautiloides, algas fere adnascens. List. H. 



Conch, tab. 533. — tab. 553. Iluddesford' s edition. 

 Very small Worm Shells. Dale, Harxv. p. 391. No. 2. and p. 455. 



No. 2. 

 Depressed orbicular Cochleae on Alg^. Wallis. Northumb. J. 



p. 402. iVo. 41. 

 Serpula Spirorbis, Spiral. Penn. Br. Zool. No. 155. tab. 91. Jig. 155. 

 Serpula Spirorbis, Spiral, Vermiculaire Nautiloide. — parva orbicu- 

 lata et Spirali, ammoniae instar convoluta. Dd 

 Costa Br. Conch. \2.-^tab. 2. fg. 11. 



