Class VI. SERPULA. WORM-SHELL. S6l 



Lin. Syst. 1265. No. 795. Lin. Tr. viii. 244. 10. trique- 



Gm. Lin. 3740. Mont. Tesi. Br. 511. tra. 



Faun. Suec. No. 2206. ^"^^^ "'"'" 



S. with a triangular shell, irregularly twisted. 



Adheres to (in a creeping form) stones and 

 other substances. 





Irregularly twined. 



Lin. Sysf. 1267. No. 805. Lin. Tr. vili. 243. 11. vermi- 



Gm. Lin. 3743. Mont. Test. Br. 50Q. cularis. 



JB//«5 Coral, tab. xxxvi. Jig. 

 2. 



S. with a slender, incurvated, taper, and round- 

 ed shell. 



According to Mr. Ellis, inhabits all our 

 coasts. - 



Lin. Tr. viii. 243. Mont. Test. Br. 508. 12. reversa. 



* S. with a subcylindric, wrinkled, spiral, irre- 

 gular shell ; aperture reversed. Inhabits the 

 sea upon crabs ; a distinct species ? 



