Correspondence — Mr. E. Wethered — Mr. A. 8. Woodward. 525 



THE PEA-GRIT OF LECKHAMPTON HILL. 



Sir, — In the Quarterly Journal of the Geological Society just 

 issued, there is a paper by my friend, Mr. Witchell, of Stroud, on 

 " The Basement Beds of the Inferior Oolite of Gloucestershire." l 

 The reasons for writing the paper are given under two heads, but 

 I am only now concerned with the first. Mr. Witchell says : 2 1. 

 " That the beds called ' Pea-grit ' in the Leckhampton section by Huo-h 

 Strickland, which name was adopted by Dr. Wright and the Geolo- 

 gical Surveyors, included in that term — erroneously as I think — all 

 the beds occurring between the Pea-grit proper, and the Cephalopoda 

 bed of the sands, which beds are shown in some sections to be more 

 than thirty feet in thickness." 



Further on Mr. Witchell tells us that the " Pea-grit " and Base- 

 ment Beds at Leckhampton Hill " are described as Pea-grit in the 

 published works referring to them. Now, if Mr. Witchell will refer 

 to the late Dr. Wright's paper, 3 " On the Palseontological and Strati- 

 graphical Relations of the so-called Sands of the Inferior Oolite," he 

 will find that in the section of Leckhampton Hill the lower beds of 

 the Inferior Oolite are referred to as Pea- grit and ferruginous oolite." 

 That Dr. Wright was fully aware of beds of oolitic structure beneath 

 the " Pea-grit," and which he recognized as distinct from the par- 

 ticular bed bearing that name, is shown by his section of Cleeve 

 Hill, 4 in which he gives the following : — 



ft. in. 

 Pea-grit 21 30 



Coarse ferruginous oolite 22 5 



Edward Wethered. 



NOTIDANUS AMALTHEI, OPPEL. 



Sir, — During a recent examination of the fossil Vertebrates in the 

 Whitby Museum, which I have been enabled to make through the 

 kindness of Mr. Martin Simpson, I have been fortunate enough to 

 meet with the Liassic tooth mentioned by Tate and Blake as referable 

 to Notidanus Amalthei. This specimen, it will be remembered, was 

 not forthcoming at the time of publication of my contribution to the 

 Palasontology of the Notidanidae. (antea, p. 208), and it may therefore 

 be interesting to add a brief note upon the features it presents. 



The fossil consists merely of a single laterally-compressed cone, 

 scarcely two millimetres in height, with a very minute denticulation 

 at the base of one edge, and fixed upon a fragment of a root. The 

 cone has an enamelled surface, and the one side is almost plane, 

 while the other is strongly convex ; and the appearance of the tooth 

 is certainly suggestive of other cones having been broken away from 

 the one that remains. There can be scarcely any doubt, indeed, that 

 the specimen belongs to a Selachian genus, and it bears much 



1 Q, J.G.S. vol. xlii. part 3, No. 167, pp. 264—270. 2 Ibid. p . 264 



3 Ibid. vol. xii. p. 295, 1856. 



4 Proc. Cotteswold Club, 1869, " Correlatiou of the Jurassic Rocks of the Cote 

 d'Or and the Cotteswold Hills." 



