268 NOTES. 
shire, in the neighborhood of Kidderminster, the Cephalaspis Lyeilii. 
has been detected in beds that appear to be intermediate between 
the Tilestones and Cornstones and associated with other fossils sup- 
posed to be characteristic of the Tilestones. Mr. Roberts of Kidder- 
minster has found the Pterygotus of the Kington Tilestones and 
the Picraspis of Mr. Banks in the same Gray Sandstones and Corn- 
stones which contain Cephalaspis Lyell and Pteraspis ornatus. I 
exhibited these fossils at a meeting of the Geological Society of Lon- 
don, April 1857, in the presence of Sir P. Egerton, Sir R. Murchison 
and Sir C. Lyell. 
NOTE H, Paces 133 anv 187. 
The correctness of the term “ tail-flap,” used by Mr. Miller 
when describing a peculiar-looking plate of the Balruddery lob- 
ster, has been questioned. Sir Charles Lyell and Mr. Page both 
believe it to have been a jaw-foot. Several fine specimens of 
this organism have been sent up to Mr. Salter of the Jermyn 
Street Museum, London, whose decision will probably definitely 
settle the matter 
NOTE H, (No. 2) Pace 135. By Rev. W. S. SYMONDS. 
Near Ludlow, Hereford, and several other localities, the Upper 
Ludlow fish-bed has been traced over an extensive area; but in 
several places the fishes appear to be absent, and their places 
supplied by large Crustaceans, chiefly Pterygotus. Himantopterus, 
Eurypterus, and Pterygotus, have been found by Mr. Banks asso- 
ciated with Pteraspides and Lingula cornea; while Mr. Roberts has 
Pieraspis and Pterygotus in the same beds as Cephalaspis Lyeilii. 
The Pterygotus of Kidderminster seems identical with the Scotch 
Seraphim. 
NOTE I, Paces 142 Anp 145. 
This organism Mr. Miller had some time ago definitely con- 
cluded to be vegetable. See “The Testimony of the Rocks,” p. 
