﻿Dr. Nicholson on the Graptolites of the Coniston Flags. 155 



tynes ; in this it is allied to C. tetraceros. The straightness of 

 the beam separates it from the species to which he had compared it ; 

 and it is further separated from G. tetraceros by the absence of deep 

 wrinkles. The small amount of palmation in C. Falconeri is greatly 

 increased in G. Brownii, and reaches its maximum in 0. dama. 



14. " Notes to accompany a section of the Strata from the Chalk 

 to the Bembridge Limestone at WhiteclifF Bay, Isle of Wight." By 

 T. Codrington, Esq., F.G.S. 



In these notes the author described in detail the beds which are 

 comprised in the section exhibited in WhiteclifF Bay, and which he 

 had carefully measured at low water. Comparing it with the Alum- 

 Bay section measured by the officers of the Geological Survey, he 

 found the total thickness of the beds from the chalk to the base of 

 the fluviomarine series to be the same in both, although the thick- 

 nesses of the component formations differ considerably. 



15. " On the Graptolites of the Coniston Mags, with notes on the 

 British species of the genus Graptolites.'''' By H. A. Nicholson, D.Sc, 

 M.B., F.G.S., &c. 



The author, after remarking upon the prevalent differences of 

 opinion regarding the stratigraphical position of the Coniston Flags, 

 proceeded to describe the following species : — 



Diplograpsus palmeus, Barr. 



D. folium, His. 



D. angustifolius, Hall. 



D. confertus, Nich. 



D. tamariscus, Nich. 



D. pristis, His. 



Retiolites peiiatus, Nich., nov. sp. 



Rastrites Linngei, Barr. 



Climacograpsus (Diplograpsus) 



teretiusculus, Bm. 

 Bastrites peregrinus, Barr. 

 Graptolites lobiferas, M l Coy. 



Graptolites Sedgwickii, Portl. 



G. fimbriatus, Nich, 



G. Nilssoni, Barr. 



G. tenuis, Portl. 



G. discretus, Nich. 



G. Bohemicus, Barr. 



G. priodon, Bronn. 



G. colonus, Barr. 



G. Sagittarius, Linn. 



G. tumculatus. 



G. Sedgwickii, Portl. 



, var. spinigenisj Nich. 



16. "On the 'Waterstone Beds' of the Keuper, and on Pseudo- 

 morphous Crystals of Chloride of Sodium." By G. W. Ormerod, 

 Esq., M.A., F.G.S. 



Between Salcombe Mouth and the River Sid, and between Bud- 

 leigh-Salterton and Littleham Bay, several beds of ripple-marked 

 " Waterstone " occur, and also pseudomorphous crystals of chloride 

 of sodium. A small fragment of Waterstone exhibited apparently 

 traces of reptilian remains. In conclusion, the author drew atten- 

 tion to the fact that pseudomorphs occur over the greater part of the 

 Triassic area in England. 



17. "On the discovery of the remains of Pteraspidian Pishes in 

 Devonshire and Cornwall, and on the identity of Ster/anodictyum 

 Cornubicum, M'Coy, with Sca/phasjns (ArchceoteutJiis) Dunensis, 

 Roemer." By E. Ray Lankester, Esq. 



A specimen labelled " Pteraspis" from the Lower Devonian slates 

 of Mudstone Bay, in the collection of the late Mr. Wyatt-Edgell, 



