1850.] BRODIE ON THE INFERIOR OOLITE. 239 



Fig. 6. L. hirsutus. 

 Fig. 6 a. Ditto, magnified. 

 Fig. 7. Young specimen of L. hirsutus ? 

 Fig. 7 a. Ditto, magnified. 

 Fig. 8. L. Grayii. 

 Fig. 9. L. Salteri. 



Fig. 9 a. Ditto, magnified : the eyelid on the right side is exaggerated in size. 

 Fig. 10. L. Barrandii : under surface of the tail, showing the incurved striated 

 margin. 



Figs. 1, 4, 5, & 8 are from specimens in the cabinet of Mr. John Gray, to whose 

 kindness I am indebted for the loan of them ; the remainder are from my own 

 collection. 



EXPLANATION OF PLATE XXVIL Ms. 



Fig. 1. LicMs BucJclandi. A nearly perfect specimen; the first thorax -joint is 

 lost, — its position is indicated in 1 « by dots. 



Fig. 1 a. A highly magnified view of the same. 



Fig. 1 b. Outline, showing the eye and facial suture. 



Fig. 2. L. hirsutus ; showing ten of the body rings and the tail. 



Fig. 2 a. The tail magnified. 



Fig. 3. L. Grayii ; one side of the glabella, with the lateral and basal lobes ; the 

 course of the facial suture posteriorly is indicated by dots. 



Fig. 3 a. The same ; the wing, with the eye. 



Fig. 3 b. Ditto, viewed from the front. 



Fig. 4. L. Salteri ; a good specimen, showing the regular arrangement of the tu- 

 bercles on the head. 



Fig. 5. L. Barrandii ; a perfect tail. 



Figs. 1 bf 3, & 4 are from Mr. Gray's collection ; the rest are from my own. 



2. On certain Beds in the Inferior Oolite, near Cheltenham. 

 By the Rev. P. B. Brodie, M.A., F.G.S. With Notes on a 

 Section o/Leckhampton Hill. By H. E. Strickland, Esq., 

 M.A., F.G.S. 



The inferior oolite in the immediate neighbourhood of Cheltenham, 

 has been already well described in the '* Geology of Cheltenham/' by 

 Sir R. Murchison, Mr. Buckman, and Mr. H. E. Strickland ; but as 

 there is a very interesting bed called " the roestone " by local geolo- 

 gists, which, however, for obvious reasons it will be better to name 

 ^' shelly freestone,''^ containing several new and peculiar fossils, many 

 of which have not been previously noticed, it may be desirable to lay 

 a brief account of it before the Society. 



The outer escarpments of the Cotswold Hills are composed of the 

 inferior oolite and lias, and form an important feature in the geology 

 of the county, presenting bold headlands along the vales of Glouces- 

 ter and Berkeley, in some instances rising to the height of more 

 than 1000 feet above the level of the sea, and extending in a tor- 

 tuous line for several miles from north-east to south-west. They 

 constitute the eastern boundary of the Severn ; the towns of Chel- 

 tenham and Gloucester lying in bays at the foot of this range of hills, 

 the base of which consists of lias, surmounted by a variable thickness 

 of oolite. 



vol. VI. — part I. t 



