OF NOETHUMBEELAND AND DUEHAM. 73 



Rare. Dredged in about 20 fathoms water at Cullercoats in 

 1837. — /. A. A specimen has also been got from the fishing 

 boats at the same place. — J. H. F. 



Mr. Bean's description was taken from young shells, and is in 

 some respects imperfect. Our specimen is about half an inch 

 long, and nearly black ; the granules are disposed in longitudinal 

 beaded lines, which are small, and rather faint on the dorsal 

 ridge, and become coarse and less regular at the sides. When 

 alive, the spines of the marginal band are slightly fasciculated, a 

 few of them standing erect near the junctions of the valves ; but 

 these fall after the animal dies, and the margin then appears uni- 

 formly hispid. 



3. C. MARGiNATUs, Perm. 



Chiton marginatus, Mont. Test. Brit. 1. 

 Common under stones between tide-marks, and very variable 

 in colour and markings. 



4. C. ciNEREUs, Linn. 



Chiton cinereus, Mont. Test. Brit. 3. 



On stones and old shells from deepish water, frequent. Oc- 

 casionally found on stones at low- water mark. — A. H. 



The variety found on our coast is rather small, grey, and 

 usually freckled ; but is seldom covered with the black incrusta- 

 tion so common on some of the large varieties of the Scottish 

 coast. 



5. C. RUBER, Zmn. 



Chiton ruber, Flem. Brit. Anim. 289. 

 Under stones near low-water mark, and at the roots of Lamin- 

 aria digitata, frequent. 



6. C. L^vis, " Penn." Mont. 



Chiton Icevis, Mont. Test. Brit. 2. 

 Under stones at low-water mark, rare. 



7. C. L^viGATUs, Flem. 



Chiton Icevigatus, Flem. Brit. Anim. 290. 



Among the rocks below Dunstanborough Castle, very rare. 



3fr. P. Emhleton. A single living specimen was also got at 

 Cullercoats. — A. H. The disunited valves are sometimes thrown 

 on Whitley sands. — J. H. F. 



