HELIX (MACULARIA) OGDENI. 303 



Since the publication of Parts I and II of this volume some interesting 

 specimens of the genera therein dealt with have come into my possession, 

 especially from the Wexford gravels, which, through the energy of my old 

 colleague Mr. Alfred Bell and with the kind assistance of the Rev. Father Codd, 

 P.P., of Blackwater, near Enniscorthy, have been lately obtained. 



Those I have already received from that locality have proved very interest- 

 ing, but as the sections from which they come are said to be some miles in length 

 and in places to be full of shelly material, they may prove still more so as time 

 goes on. 



My first idea was to reserve such new material for a possible Appendix at 

 the conclusion of the work, but as for an obvious reason this may never be 

 reached, it seems better to describe from year to year such specimens as may 

 reach me, even if some of them may be more or less out of place. It will give 

 me the opportunity, moreover, of discussing the important fauna of St. Erth as 

 well as some fossils from the Pleistocene deposits of Great Britain which are 

 closely related to those of the Pliocene, and should be considered with them. 



As to some divisions of the Crag Mollusca which I have not yet touched, 

 I fear I may not be able to deal with them as fully as I could wish, and that I 

 shall have to leave much to my successors. For the present I must content 

 myself with endeavouring to bring up to date, as far as I can, the nomenclature, 

 identification and distribution of certain groups, for the study of which I may 

 have most material at my disposal, or which may seem likely to be of most 

 interest to students of the later Tertiary fauna. 



Genus HELIX, Linne, 1758 (continued from p. 17). 

 Sub-genus MACULARIA, Albers, 1850. 



Helix (Macularia) Ogdeni, Kennard and B. B. Woodward. Plate XXXIII, fig. 1. 



1914. Helix (Macularia) Ogdeni, Kennard and B. B. Woodward, Proc. Malac. Soc, vol. xi, p. 155 

 (figs.). 



Specific Characters. — Shell imperforate, depressed, conic, showing traces of 

 oblique lines of growth; whorls five, convex, regularly increasing ; apex obtuse; 

 suture linear, moderately impressed ; body-whorl about half the size of the shell, 

 scarcely dilated, convex below and impressed in the umbilical region, deeply 



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