151 



blue clay, including in £=ome places, subordinate courses of lime- 

 ai/uiic called Kelloway rock. The only trace of insect remains 

 from this division of the Oolitic group is the supposed larva of 

 an insect, found by Mr. J. C Pearce, near Christian Malford, 

 which Professor Westwood thought might possibly be referred to 

 a Libellula. As the Oxford clay is supposed to have been 

 deposited in a deep sea, remains of insects are hardly to be 

 expected in it. 



Lower Oolite. 

 Forest Marble. 



The forest marble is found immediately below the combrash, 

 and belongs to the upper series of the Lower Oolite. It is said 

 to be composed chiefly of thin fissile and slaty oolitic limestones, 

 divided by clays, sometimes by sand and grit. The only record 

 of the discovery of fossil insects from these strata is made by Mr 

 P. B. Brodie, who states that in some of the quarries in this 

 series, at Farleigh, near Bath, he found a few elytra of small 

 beetles. They are undescribed. 



Great Oolite. 



In the list of fossil insects at the end of Mr. P. B. Brodie's 

 paper on " The Distribution and Correlation of Fossil Insects," 

 &c., I find a record of elytra of Coleoptera from the Great Oolite 

 formation, in the eastern moorlands of Yorkshire. The discovery 

 of these remains is also alluded to by Dr. Mantell in the " Medals 

 of Creation;" by Dr. Buckland in the "Bridgwater Treatise;" 

 by Mr. R. C. Taylor, in the III. Vol. of " Loudon's Magazine of 

 Natural History ; " and by Messrs. Young and Bird, in their 

 " Geology of Yorkshire." In a note at page 379 of the 

 " Geological Proceedings for 1854," reference is made by Professor 

 Westwood to a fossil insect having been met with by Professor 

 Mon-is in the Great Oolite of Lincolnshire. 

 Stonesfield Slate. 



The Stonesfield slate lies at the base of the Great Oolite, and 

 is found chiefly in Oxfordshire and in the Cotteswold Hills, 

 Gloucestershire, though theie are, I believe, similar beds at Ketter- 



