Class VI. SERPULA. WORM-SHELL. 359 



S. sinistrosa. Mont. Test. Br. 504. Var. B. 



In this variety the volutions are reversed; 

 minute. 



Found in the sea on Zoophytes. '■■. 



Lin. Tr. viii. 241. Mont. Test. Br. 505. 3. MINUTA. 



* S. with an uniform, spiral, orbiculate shell ; 

 volutions round, reversed ; very minute. 



Found on the sea adhering to Zoophytes. 



G»». iiw. 3741. " Mont. Test. Br. 500* 4. granu- 



Xin. TV. viii. 241. ^^'^^• 



* S. with a round spiral shell, glomerated, and 

 having three raised ridges on the upper side; 

 minute. Adheres to stones and sea shells. 



Lin. Tr. viii. 242. Mont. Test. Br. 503. 5. hetero- 



STROPHA. 



* S. with a round spiral shell, and having two 

 or three sulcated reversed volutions. 



Found on shells and slaty rocks in the sea. 



