402 Transactions of the Society. 



realised the variety and extent of these forms. The subjoined list 

 of Chalk Foraminifera, comprising as it does no less than 118 

 species, contains, it will be observed, a very full and highly typical 

 series of Upper Cretaceous forms. So varied indeed is this fauna 

 that we have deemed it desirable to submit our specimens and 

 lists to Mr. Joseph Wright, F.G.S., of Belfast, before submitting 

 this paper to the Society as a not unimportant section of our work 

 upon these shore-sands. 



A certain number of the species have been pronounced by Mr. 

 J. Wright to be new to the Chalk, being for the most part species 

 which have hitherto been described as making their first appearance 

 in geological time in Tertiary beds. In point of fact many of 

 these were recorded by us, in the year 1894, from the Upper Chalk 

 of the Twyford-Maidenhead Railway cutting,* and prior to that 

 date many of these species had been recorded from the same 

 locality by Mr. Frederick Chapman.f 



Recent and Tertiary fossil specimens of many of these forms 

 have already been recorded by us in the preceding papers of this 

 series ; and when this is the case, we have thought it expedient to 

 preserve in the subjoined list the consecutive number under which 

 it was originally described. The whole of the described species will , 

 however, be co-ordinated with proper reference numbers in the 

 analytical table which will conclude this series of papers, when the 

 supplement now in course of preparation has appeared in this 

 Journal. 



As the paper on the Twyford-Maidenhead Chalk above referred 

 to was not published in the Proceedings of any Society, we shall 

 take the opportunity of distributing the remaining copies of the 

 paper to the workers to whom this paper will be sent, and shall 

 take pleasure in sending copies of it, so far as possible, to any 

 students of the Foraminifera who may apply for it. 



To avoid repetition and economise space in the bibliographical 

 references under each species, we have intimated the occurrence 

 of the species among those recorded in the Prolegomena above 

 referred to by the letters (H-A) after the number. Whenever 

 possible, that is to say in most cases, reference has been made to 

 Egger's excellent monograph on the Foraminifera of the Upper 

 Bavarian Chalk, whicli is by far the most complete and best 

 illustrated work on Cretaceous Foraminifera. 



In order to restrict the present paper to those species of the 

 Cretaceous origin of which there can be no shadow of a doubt, we 



* Prolegomena towards the Study of the Chalk Foraminifera : an elementary 

 paper on the collection, preparation, examination, identification, and mounting of 

 Foraminifera from the Chalk, illustrated by a study of the Chalk from the 

 Twyford-Maidenhead Railway cutting. By Edward Heron-Allen, F.L.S., 

 F.R.M.S, London : Nichols, 1894. 



t On Microzoa from the Phosphatic Chalk of Taplow. By F. Chapman, 

 F.R.M.S., Quart. Journ. Geol. Soc, 1892, p. 514, 



