138 The Irish Natuj-alist. 



Succinea oblonga, Drap. 

 I. — — — — — VII. — — - — — 



The two forms S. ohlonga and S. arenaria are generally regarded as 

 distinct species by continental authorities, but sufficiently reliable charac- 

 ters have not as yet been discovered by means of which they may be 

 separated, and I follqw Clessin in uniting the two under the older name. 

 This species has been found in very few localities in Ireland. 



Foreign Distribution. — Great Britain, south Scandinavia, Russia, 

 Germany, Austria, Transylvania, north Italy, Franc 2, Spain, Portugal, and 

 Siberia. 



Genus— CARYCHIUM. 



Carychium miniinTim, Miill. 

 I. II. — IV. V. — VII. VIII. IX. — XL XII. 



In damp localities this prettj' little snail seems to be abundant every- 

 where in Ireland. 



Foreign Distribution. — Great Britain, south Scandinavia, Finland, 

 south Russia, Caucasus, Transylvania, Austria, Germany, Italy, Switzer- 

 land, Sicily, Corsica, France, Spain, Portugal, Algiers, and Morocco. 



(TO BE CONTINUED.) 



THE IRISH POST-GIvACIAI. BSTUARINE DEPOSITS. 



BY R. I.I,OYD PRAKGER, B.A., M.R.I. A. 



In a paper recently read before the Royal Irish Acadeni}^ 

 {Proccedi7igs, 3rd series, vol. ii. No. 2), I have described a series 

 of Pleistocene beds which occupy considerable areas in most 

 of the existing estuaries in the north-east of Ireland, and 

 which possess a definite interest to the student of later Post- 

 tertiar}^ geology. The deposits in question lie, almost without 

 exception, below high water mark, and are, therefore, not 

 easil}" accessible, and their wet cla3^ey nature does not invite a 

 close acquaintance ; they contain a well-preserved and varied 

 fauna that lived on the spot where it is now entombed. In 

 age they represent the latest page of the geological record, 

 and correspond with the raised beaches and raised sea-beds 

 which fringe the north-eastern shores. At Belfast especiall3% 

 and at various other points on the coasts of Deny, Antrim, 

 and Down, these estuarine deposits have received a fair share 

 of attention from local geologists, and their extent, age, and 

 fauna have been now well worked out.' Elsewhere in Ireland 



* See Grainger — " Shells found in the Post-tertiary Deposits of Belfast," 

 Nat. Hist. Review, 1859; Stewart — " Latest Fluctuations of the Sea-level on 

 our own Coasts," and *' Fossils of the Estuarine Clays of Down and A.\\- 

 trini,''' Eighth Annual Rcjiort, Belfast Nat. Field Club; Wright — "Post-tertiary 

 Foraminifera of the north-east of Ireland," Proc. Belfast Nat. Field Club, 

 1879-80, Appcndio:; Bell — "Fourth and Final Report on the Wexford 

 Gravels," Brit. Assoc. JRej^ort, 1891 ; Praeger — "Sections exposed at Alexan- 

 dra Dock, Belfast," Proc. Belfast Nat. Field Club, 1886-87, Ap2^endix; and 

 "Report of Larne Gravels Committee," tJM., 1889-90; etc. 



