196 RICHARDSON : THE 1,0 WER OOLITIC ROCKS OF YORKSHIRE. 
ellipticus Miller ( = B. giganteus M. & L.), while recorded at this 
locality from above and belo\^' the probable Crinoid-Grit equivalent 
is generally most prevalent above ; while (3) specimens of 
'■ Gervillia acuta Phil.," occur the most abundantly in the lime- 
stone-division (c) below the probable Crinoid-Grit equivalent. 
Indeed, in studying the recorded sections of the Scarborough 
Beds it is noticeable that the maxima of Belemnites ellipticus 
Miller,! of isocrinoid-ossicles and of Gervillia, occur in this 
sequence in descending order and function as approximate indices 
to the three divisions (as regards lithology) of the Scarborough 
Beds. Belemnites ellipticus Miller, and B. quinquesulcatus Blainv., 
are not at all uncommon in the beds of sauzei date on the Cleeve 
Hill plateau in the Cotteswold Hills, near Cheltenham. 
At Ravenscar (Blea Wyke) the Scarborough Beds are much 
the same as regards faunal and lithic characters as their equiva- 
lents at Hundale Point, only they are thicker — 89 feet instead of 
71 feet 2 inches. 
When the Scarborough Beds are traced across Howdale 
Moor it is noticed that thin flaggy sandstones occur very per- 
sistently in the upper portion of the shale-division [a) and are 
characterized more particularly by a little Gryphoea (see Phillips, 
" Geol. York. Coast," 3rd ed., PI. IX., f. 26). In the neighbour- 
hood of Lambfold Hill, the probable equivalent to these flaggy 
beds is much more gritty and prominently developed. 
Generally speaking, in the neighbourhood of Scarborough, 
the three divisions of the Scarborough Beds are not very well- 
defined ; but in the neighbourhood of Whitby they become much 
more definite, as the sections recorded by Fox-Strangways at 
Gate Holm Beck, Spittle Beck and Shawm-Rigg Beck, etc., show.^ 
In the district north of the Esk, as for example in the neigh- 
bourhood of Scaling, the three divisions are very well marked. 
The lowest or limestone-division includes many calcareous bands, 
sometimes approaching nearest to sandstones and at others to 
true limestones. The middle division, or that in which the 
arenaceous constituent usualh^ predominates, becomes to the 
west a coarse grit, which on the Eston outlier is composed of 
quartz-grains often as large as peas, and is replete with the dis- 
1 Pseudomonotis braamburiensis (Phil.) appears to have its maximum in the shale-division. 
2 "The Jurassic Rocks of Britain," Vol. I., "Yorkshire," pp. 237-238. 
