37 



1. fascicularis, Lin. 



Animal brownish white, the foot very broad. 

 Deep water on the north coast, not common. 



2. marginatus. 



Chiton marginatus, Penn, — C. cinereus, 

 Lowe. 

 Animal brownish white. 



Under stones at low water, common. The Manx 

 specimens are sometimes white, and sometimes one- 

 half white and the other half dark grey. 



3. ruber. 



Chiton ruber, Lin. Flem. Lowe. — Chiton 

 laevis, Penn. — Chiton crenulatus, Risso, 

 Animal cream-white. 



On stones in about ten fathoms water on the north 

 coast. 



4. cinereus. 



Chiton cinereus, Lin. — Chiton asellus, Lowe, 

 — Chiton Rissoi, Paijr. ? 

 Animal brownish, branchi^ tinged with green. 



5. laevils. 



Chiton lasvis, Mont. &c. 

 On shells in deep water. 



