XXVII.—A Description of various Fossil Remains of three distinct Saurian Animals, recently discovered in the Magnesian Conglomerate near Bristol.

The fossil remains, described in this paper, were found in quarrying the brecciated beds, which rest upon the highly-inclined carboniferous limestone at Redland, the south-eastern extremity of Durdham Downs, near Bristol. The breccia at this spot is not more than twenty feet thick, and is composed of angular or slightly worn fragments of mountain limestone, cemented by a red or yellow magnesian paste.* It occurs in patches over the whole of the Downs, filling up the hollows and irregularities in the limestone; and it is exhibited in the parishes of Westbury and Henbury, in Gloucestershire, and St. George’s in Somersetshire ; it forms likewise the well-known precipitous cliffs and interesting sections at Hungroad, on the Avon ; and is exhibited in the valley of the Trim, as well as at other places. It is desirable to repeat the observation of Dr. Buckland and Mr. Conybeare, that wherever the breccia occurs in the neighbourhood of Bristol, it is principally composed of the debris of the rocks on which it rests. The whole of the bones were evidently dislocated before they were entombed, as several of the specimens were found in actual contact with the mountain limestone, while others were dispersed throughout the breccia : many of the bones were also clearly fractured before they were enclosed. This deposit has been considered the representative of the lower divisions of the new red sandstone series of Yorkshire and the adjacent counties; and to be in the place of a great part of the