296 D)\ C. Davison — British Earthquakes. 



Horizon and Locality. — Drummuck Group : Thraive Grien, Girvan. 



RemarJcs. — The three specimens in Mrs. Gray's collection are some- 

 what crushed and the tube is flattened, supposing it to have been once 

 cjdindrical ; and it is to crushing that we may attribute two continuous 

 longitudinal grooves running down the side of one specimen across 

 several rings ; and possibly in another specimen a narrow flattened 

 longitudinal ridge traversing uninterruptedlj' six or seven consecutive 

 segments is also due to the same cause. 



This cnrious jointed tubular fossil is most probably of an annelidan 

 nature, and allied to Cormdites and Conchicolites} It differs from the 

 former by its cylindrical instead of conical shape, but agrees in the 

 overlapping of the flat rings and longitudinal striation, as well as in 

 its solitary habit and non-attachment to foreign objects. Conchicolites 

 is gregarious, attached, and curved, with thin walls and no longitudinal 

 striae, but is not so markedly conical as Cornulites. The latter is 

 known only from the Silurian, but Conchicolites is an Ordovician 

 genus. It does not seem possible to refer it to^ either of these genera 

 sens, str., though its afiinities with them are suggested. 



EXPLAXATION OF PLATE XII. 



Fig. 1. — ReceptacuUtes Grayi, sp. nov. Plates of upper surface, showiug orna- 

 mentation. X 6. 



,, 2. — Ditto. Plates of lower surface, x 4. 



,, 3. — ReceptacuUtes girvanensis, n'^. now General view of specimen. x I5. 



,, 4. — Ditto. Poi'tion of lateral surface of same specimen, showing arrangement 

 of plates. X 2. 



,, 5. — Ditto. Plates near lip of same specimen, x 8. 



,, 6.— Ditto. Plates near base of same specimen, x G. 



,, 7. — Spongarium ardmillaiieiise, sp. nov. x Ij. 



,, 8. — Ditto. Counterpart, x 1^. 



,, 9.— Annelidan tube (?). x 3. 



,, 10. — Ditto. Two segments, x 6. 



III. — Ok sojik mixor British Earthquakes of the years 1904-1907. 

 By Charles Davisox, Sc.D., F.G.S. 



rpHE four years 1904-1907 were marked by the occurrence of 

 J_ three considerable earthquakes, one of which (the Derby earth- 

 quake of July 3rd, 1904) disturbed an area of about 25,000 square 

 miles, another (the Doncaster earthquake of April 23rd, 1905) an area 

 of about 17,000 square miles, while the third (the Swansea earthquake 

 of June 27th, 1906) was felt over an area of 66,700 square miles, and, 

 with the exception of the Hereford earthquake of 1896, was the 

 strongest felt in this country during the last twenty years. Besides 

 these, there were 56 others of less intensity, 9 of which originated in 

 England, 44 in Scotland, and 3 in Wales. The total number for the 

 nineteen years 1889-1907 is thus 214, or 50 in England, 137 in 

 Scotland, and 27 in Wales. 



1 Nicholson: Amer. Journ. Sci., vol. iii, ser. in (1872), p. 202. 



