﻿128 Reports and Proceedings — 



coasts instances are not uncommon of the production of grooves at 

 riglit angles to the shore by tidal action and moving stones. In his 

 opinion the deposits had been formed, as long ago suggested by 

 Mr. Ball, by a combination of marine and land denudation, and he 

 had certainly never suggested that they could be of volcanic origin. 

 The so-called Karoo boulder-beds he thought ai'e either brecciated 

 traps or metamorphosed rocks into which the felspathic element 

 largely enters. 



2. " On British Cretaceous Patelloid Gasteropoda." By John 

 Starkie Gardner, Esq., F.G.S. 



In this paper the author commenced by a general statement as to 

 the classification of the forms to be described in it, which he referred 

 to the families Patellidae, Fissurellidas, Calyptrasidge, and Capulidse. 

 He noticed thirty species, which are mostly of rare occurrence ; and 

 nineteen of these were described as new. Four genera were 

 indicated as new to the Cretaceous series, and one as new to the 

 Cretaceous in England. The new species were Acmcea formosa and 

 plana, Selcion Meyeri, Anisomyon vectis, Scurria calyptraiiformis and 

 depressa, Emarginula pimcturella, divisiensis, ancistra, Meyeri, and 

 unicostata, Pimcturella antiqua, Calyptnsa concentrica, Crepidula 

 chammformis, Crucibulum giganteum, Fileopsis neocomiensis, duhius 

 and Seeleyi, and Jllpponyx Dixoni. Most of the Patellidge were 

 from the Neocomian, and the majority of the Fissui'ellidEe from the 

 Upper Greensand : the species of the other two families were scat- 

 tered through the series. The author referred to the indications of 

 depth of deposit and other conditions furnished by these Mollusca, 

 and also to the resemblance presented by many of them to certain 

 bivalves common in the same rocks, which he regarded as a sort of 

 mimicry. 



3. " Observations on remains of the Mammoth and other Mammals 

 from Northern Spain." By A. Leith Adams, Esq., M.B., F.E.S., 

 F.G.S. 



The remains noticed in this paper were obtained by MM. O'Eeilly 

 and Sullivan in a cavern discovered at about twelve metres from the 

 surface, in the valley of Udias, near Santander, by a boring made 

 through limestone in search of calamine. They were found close to 

 a mound of soil which had fallen down a funnel at one end of the 

 cavity, and more or less buried in a bed of calamine which covered 

 the floor. The cavern was evidently an enlarged joint or rock- 

 fissure, into which the entire carcases, or else the living animals, 

 had been precipitated from time to time. The author had identified 

 among these remains numerous portions, including teeth, of Elephas 

 primigenius, which is important as furnishing the first instance 

 of the occurrence of that animal in Spain. He also recorded Bos 

 primigenius and Cervus elaphus (?), and stated that MM. O'Eeilly and 

 Sullivan mention a long curved tooth which he thought might be a 

 canine of Hippopotamus. 



