Lower- Carboniferous Entomostraca. By T. R. Jones, 315 



8. H. Howicli. Bluish-grey, shaley, argillaceous limestone 

 with Naticopsis and other fossils. From the middle of the M.-L, 

 group. Some obscure ovate Cytherellte (?). 



9. K. Shittleheugh, Reedwater, Northumberland. Dark-shale, 

 with some small, obscure, crushed, and nearly semicircular 

 valves of L. Scotohurdigalensis (?). From the lower part of the 

 M.-L. group. 



10. L. Howicli. Hard, black, carbonaceous shale, with 

 Aviculopecten, and small obscure casts of Z. Scotolurdigalensis (?). 



11. M. Lamherton. Arenaceous shale, dark-grey and hard; 

 from a few yards beneath the lowest bed of the section given at 

 page 27 of the " Monogr. Foss. Estherise," 1862. It contains 

 Spirifer, &c. A very interesting little Entomostracon occurs 

 here (four or five specimens have been found) which has the 

 characters of a minute Cytherella. I shall record it as Cytherella 

 Tatei, in memory of its discoverer. 



12. N. Howick. Soft, black, carbonaceous shale, with a frag- 

 ment of Aviculopecten, and obscure casts of L. Scotolurdigalensis (?) . 



13. 0. Near Cornhill. Impure limestone with Anthracomya 

 (?) and Microconchus. Near the same zone Araucarites, G. Tate, 

 " Fossil Flora of the Mountain-limestone Formation of the 

 Eastern Borders," p. 298, occurs. No Entomostracon. 



14. Q. Cockhurnspath, South of. Very impure limestone, or, 

 rather, a brownish-grey micaceous sandstone, cemented with the 

 calcareous Entomostracan fragments. It belongs to the lower 

 part of the Tuedian*^ group, and is like that marked " W," but 

 not so coarse. L. Scotohurdigalensis abounds in it. In a letter 

 Mr Tate described the specimen as " A very impure limestone 

 near the base of the Tuedian group, on the Berwickshire coast, 

 about one mile south of Cockhurnspath. Of this bed there are 

 three feet ; and above it a conglomerate of three feet, with the 

 same fossils. Besides Entomostraca these beds contain fish 

 remains and plants ; among the latter is Stigmaria Jlcoides." 



* See "The Berwickshire M.-L. Fauna, &c." in the "Proceed. Ber- 

 wicksh. Nat. Club," vol. iv, p. 151 ; and " Geology of Northumberland 

 and Durham " in the " Nat. Hist. Trans. Northurab. and Durh.," 1876, 

 pp. 8 and 9. In a letter dated October 8, 1861, Mr G. Tate referred to the 

 group of strata called " Tuedian " by him, as being " separated from the 

 Mountain-limestone," and as being " seen chiefly in Berwickshire, on the 

 Tweed and Whiteadder, as well as on the coast. They occur too in 

 Northumberland. My last discovery of them was at Akeld, west of 

 Wooler, where they are tilted up against the Cheviot porphyry." 



