to be seen in conjunction with a small shell of the genus Ostrea, with Corallines, with plants to be referred to the genus Fucoides, as well as with the multitude of terrestrial plants." William Hutton contributed an article, "Note upon the Burdiehouse Limestone," to the joint work by himself and Dr. Lindley[1], in which he describes the great abundance of the Cypris in that particular bed; he says, "we find, in the utmost profusion, so as even in some parts to make the rock almost oolitic, the shells of Cypris, with other minute Entomostraca &c." Only two species of Ostracoda are mentioned by Prof. T. Rupert Jones and Mr. J. W. Kirkby in their paper "On the Entomostraca of the Carboniferous Rocks of Scotland"[2], as occurring in the Burdiehouse Limestone, viz. Beyrichia subarcuata, Jones, and Leperditia Okeni, Münster, although Prof. Jones added to these in 1871, in two papers bearing the titles "On a new Locality for Leaia"[3] and "On some Bivalved Entomostraca from the Coal-measures of S. Wales." Leaia was discovered by Mr. C. W. Peach in an ironstone nodule at Wardie, on the Firth of Forth, in the Wardie-shale section of the Cement-stone group. In an Appendix to the second of the fore- going papers a new Estheria (E. Peachii) was briefly described[4]. It was discovered by Mr. D. Grieve, F.G.S., at Camston Quarry, Arthur's Seat, in beds referable, according to Prof. Geikie, to the upper portion of the Red Sandstone group. The occurrence of both the Leaia and the Estheria were brought under the notice of the British Association in 1871, by Mr. C. W. Peach, in a paper "On additions to the List of Fossils and Localities of the Carboniferous Formations in and around Edinburgh"[5]. At the same Meeting an interesting discovery of "Fossiliferous Strata at Lochend" near Edinburgh was announced by Mr. D. Grieve, who found, in an indurated shale, plants and "a crustacean, Cypris scoto-burdigalensis, or an allied species"[6].
Polyzoa.—I am unacquainted with any published notice of the the occurrence of Polyzoa in the Edinburgh Lower Carboniferous rocks.
Brachiopoda.—In Mr. T. Davidson's paper on "Scottish Carboniferous Brachiopoda," the only locality mentioned as yielding brachiopods which can with certainty be referred to a Lower Carboniferous horizon is the before-mentioned locality Wardie, where Lingula squamiformis is obtained[7]. Mr. Salter also quotes it from the same place[8].
Pelecypoda (Lamellibranchiata).—Dr. Hibbert discovered a bivalve in shale above the Burdiehouse Limestone, which he figured under the name of Unio nuciformis[9]; it, with other fossils, was reproduced by Dr. W. Rhind, and ultimately referred to the genus Anthracosia by Salter[10]. In 1838, Dr. W. Rhind published another
