358 SERPULA. WORM-SHELL. Class VI. 



GENUS XXXIII. SERPULA. WORM- 

 SHELL. 



Animal, (generally) a Terehella. 

 Shell tubular, adhering to other bodies. 



* Spiral. 



3. SPIROR- Lin. Syst. 1264. No. 794. Lin. Tr. viii. 241. 



Gm. Lin. 3740. Mont. Test. Br. 4g8. 



Faun. Suec. No. 2204. 



S. with a shell spiral or wreathed, like the cornu 

 ammonis ; very small; adhering to shells, Crus- 

 tacea, and algce. Tab. xciv. Jig. 1 . 



BIS. 



Spiral. 



2. SPIRIL- Gm. Lin. 3740. Mont. Test. Br. 4QQ. 



^^^' Lin. Tr. viii. 240. 



* S. with a pellucid, uniform, spiral, orbiculate 

 shell J volutions round, gradually decreasing in 

 size. 



