1897-] Stewart. — The Portrush Raised Beach. 2S9 



The previously published lists of the shells of the Portrush 

 gravels when compared with those of the fossil bed known as 

 the Turbot Bank, off Belfast Bay, show an intimate relation. 

 This is manifest also in the present list, all the species here 

 enumerated being common to both, save only four, namely 

 Mact7'a solida, Rissoa canccllata^ Odostoviia lactea, and Melampus 

 bideiitatus. Three species are now, for the first time recorded 

 as occurring in the Portrush beach : these are Madra solida, 

 Odosto7nia i7idistmcfa, and O. intcrstincta. 



Former enumerations have been swelled by land-shells 

 found intermixed, but as these are purely accidental they are 

 not included in the present list of raised beach fossils. It 

 may, however, be mentioned that the following species were 

 found: — Balea perversa, Hyali7iia radiatula, H. alliaria ; and 

 Helix pulchella, which was in abundance. Specimens of a 

 Vertigo occurred, but were lost before examination. 



A portion of the gravels was washed and examined by Mr. 

 Joseph Wright, F.G.S., who kindly undertook to determine 

 the Foraminifera. Mr. Wright has furnivShed a list of 27 

 species which he identified from the small amount of 

 material at his disposal, and says that there is not much to 

 remark on this bst, the species being such as occur in similar 

 deposits, and might be expected here. 



Poly77io7phina la7iceolata is now for the first time recorded 

 for the north-east of Ireland, either in the recent or fossil 

 state, and so also No7iio7ii7ia pauperata^ but the latter is a new 

 species only recently described. Three others are additions 

 to the previous list of Portrush Foraminifera,"^ namely Milio- 

 li7ia seca7is, Bolivi7ia ptmctata, and Discorbi7ia 7vsacea ; and 

 lastly, Tcxhdaria gra77ie7i appeared in former list under the 

 synonym of T. sagithda, Bolivi7ia di^oniiis of present list 

 was Textularia dij^or77iis, and Discorbi7ia 7iitida was Rotalia 

 nitida. 



Appended is the systematic list of shells found in the 

 recently exposed section of the Portrush raised beach. 



♦ Wright— " The Post-Tertiary Foraminifera of the North Blast of 

 Ireland," Proc. Belf. Nat. Field Club, Appendix, 1879-80. 



