330 ON ANCIENT INSCRIBED STONES. 



M. flexuosus has a spine at the apex of the outer margin of a 

 lanceolate obliquely truncated scale. M, Spiritus has a spine about 

 the centre of the outer margin of a subtriangular pointed scale. 



Sedgefield, Oct. 23, 1860. 



EXPLANATION OF PLATE XVIL 



Fig 1 Mysis Sjnrifus (Norman). [The spine on the antennal scale is repre- 

 sented too high up.] 

 „ I* Telson of ^fi/sis Sph'ifus. 

 „ 2 Head of Jfi/sis^ixuosiis (Miiller). 

 „ 3 Tail of the same. 

 „ 4 Head of Mysis Lamornce (Couch). 

 „ 5 Tail of the same. 



XXVI. — On Ancient Stones J hearing Concentric Circles j found in the 

 parish of Stamfordham, 1860. By the Rev. J. F. Bigge, M.A. 



Since the beginning of this year, I have been fortunate enough 

 to have been the means of discovering in this parish two detached 

 stones, bearing concentric circles. My attention was first drawn 

 to these very interesting relics of bygone days by my much- 

 esteemed friend, Mr. Langlands, of Old Bew^ick, who showed me 

 copies of some which he had found cut on the solid rock at the 

 Camp Hill, near his house. 



The first I discovered was in what appeared a very old dike, 

 a little to the south of Black Heddon. It has fine circles cut 

 upon it. I accidentally fell in -".vith the very man who well 

 remembered placing the stone in its present position in a wall 

 composed of large stones and sods. In an adjoining field, close 

 to the road, there was for long a mound of stones, circular, and 

 about four feet high, which were said to have been brought from 

 a Roman camp in the next field. The heap, some years ago, 

 was carted away to make stone drains, among which were 



