G8 MISCELLANEA. 



form — the Bellflower animal of Baker — was only a variety of 

 A. stagnormn, I did not pay much attention to the matter; and, 

 indeed, my specimens would not have warranted an independent 

 opinion. Laphopiis crystallinus must, therefore, be added to our 

 list of these interesting animals. A. stagnormn had been pre- 

 viously taken in Northumberland. — Alhamj Hcmcock, Newcastle^ 

 Oct., 1858. 



On the Occurrence of Acmcea testudinalis at Roker. — In Sept., 

 1857, I took three specimens of Acmcea testudinalis, after much 

 searching, on the rocks at low water mark, a little north of 

 E-oker. Thid is, according to our present knowledge, its southern 

 limit on the Eastern coast. Up to 1856 this beautiful Limpet 

 was not to be obtained within our district — at least, it was never 

 taken previous to that time. It has now occurred at three 

 points — namely, the Fame Islands (Tate), Whitburn (Abbes), 

 and Roker. Thus it would aj)pear that this northern form 

 is progressing southward on our coast, as it seems to have done 

 on the shores of Ireland within the last few years. Mr. Hutch- 

 inson, an intelligent fisherman, who first took this shell at 

 Whitburn, informs me that he never observed it in the neigh- 

 bourhood until 1856; and it had certainly never occurred before 

 that time to any of our naturalists in this well-searched district. 

 —Ibid. 



On the Occurrence of Teredo and Xylophaga dorsalis on the 

 Durham Coast. — Whilst walking along the beach some months 

 ago in company with Mr. Jas. W. Kirkby, we found between the 

 Black Halls rocks and the mouth of Castle Eden Dene, the end 

 of a pine spar which had been attacked by Teredo. The valves 

 w^ere not in the burrows ; avc could not, therefore, determine the 

 species, which however must have been very large, for the ex- 

 cavations were fully half an inch in diameter. From the fresh- 

 ness of the spar, which was neatly sawn at both extremities, it 

 could not have floated from any great distance. It is, therefore, 

 probable that this troublesome mollusk is a denizen of our coast, 

 and is perhaps located in some of the neighbouring ports. Some 

 time afterwards we obtained from fragments of stranded timber 



