NEWTON : MOLLUSCAN REMAINS IN ENGLISH KEUPER. 409 



Cestraciont spines and teeth [Acrodus Keiiperinus), besides a 

 fragmentary carapace of the crustacean previously mentioned. 



The credit of this discovery is shared between the Rev. 

 P. B. Brodie, M. A., F.G.S., and Mr. E. P. Richards, of Warwick, 

 both of whom have devoted considerable time in studying the 

 palaeontological features of the section at Shrewley Quarry. 

 Since Murchison and Strickland ^ first directed attention to the 

 geological structure of the Keuper-beds of this locality, we have 

 been mainly indebted to Mr. Brodie^ for any subsequent details 

 on the subject, his last contribution, only recently issued, 

 referring to the occurrence of the molluscan remains now under 

 review. 



The author has had access to the whole of the specimens 

 contained in Mr. Brodie's collection as well as to a smaller series 

 collected by Mr. Richards, and deposited by him in the 

 Geological Museum at Jermyn Street. For the loan of the 

 latter the author desires to thank Sir Archibald Geikie, F.R.S. 



DESCRIPTION OF SPECIMENS. 



Thracia(?) Brodiei sp. nov. 

 The impression illustrated by fig. i, and which is drawn 

 natural size, appears to represent a left valve belonging to a some- 

 what oval and compressed shell. It measures 29 millimetres 

 in height and 31 mill, in length. The original length of the 

 specimen is uncertain as its posterior portion is absent. Anterior 

 area extensive, with a rounded margin ; umbo situated either 

 mesially or posteriorly and taking a slightly posterior direction ; 



' ' On the Upper Formations of the New Red Sandstone System in Gloucestershire, 



Worcestershire, and Warwickshire.' — Trans. Geol. Soc, London, 1840, Ser. 2, 



vol. s, pl- 28, pp. 331—348. 



- 'On the Upper Keuper Sandstone (included in the New Red Marl) of Warwickshire.' 



— Quart. Journ. Geol. Soc, 1856, vol. 12, p. 374. 



' Notes on the Upper Keuper Section at Shrewley, where the fish (Semionotus Brodiei) 



were found, and on the Trias generally in Warwickshire.'-Ibid., 1B87, vol. 43, p. 540. 

 ' On some Additional Remains of Cestraciont and other Fishes in the Green Gritty 

 Marls, immediately overlying the Red Marls of the LIpper Keuper in Warwick- 

 shire.' — Ibid., 1893, vol. 49, p. 171. 

 ' On the Discovery of Molluscs in the Upper Keuper at Shrewley, in Warwickshire,' — 

 Ibid., 1894 (May), vol. 50, p. 170. 



