ROEBUCK : CENSUS AUTHENTICATIONS. 223 



Pupa cylindracea var. albma ; Vertigo antivertigo ; Acanthimila aculeata ; 

 Punctimi pygmaum ; Helix hortensis, 00300 ; Acicnla lineata ; and Ccecilioides 

 acicula (collected by Herr Christien Abel). 



By Prof. A. E. Boycott : Theba cantiana from Herefordshire — progeny of a 

 colony introduced about twenty years ago ; also lantern and micro, slides to illus- 

 trate the Rev. E. W. Bowell's paper on the radulte of Pyraviidula rupestris and 

 P. rottindata. 



By Mr. C. H. Moore : Sphyradiinii edentubim from St. Asaph, Flintshire, and 

 cameo cut from Cassis riifa. 



By Mr. R. Standen : Eggs of Hygrot/iia rufescens. 



The Special Exhibit of the evening was the Genus Partula, of which about 

 two-lhirds of the known species were shown by Mrs. Gill, Messrs. B. R. Lucas, 

 G. C. Spence, and R. Standen. The fine series from the Layard and Darbishire 

 Collections in the Manchester Museum were also shown. Mr. R. Standen gave 

 an interesting account of the principal characteristics of the shells in this genus, 

 and described their peculiar geographical distribution. He also exhibited the 

 calcareous eggs of P. canalis from Samoa, and P. gany?nedes from Marquesas. 



CENSUS AUTHENTICATIONS. 



By W. DENISON ROEBUCK, F.L.S., Hon. Recorder. 



All the records here given are based upon examples sent to the official 

 authenticators : myself for slugs only ; Mr. Fred Taylor for Paludestrinids ; and 

 Mr. John W. Taylor for all other species. 



Cardiganshire : Mr. Thomas H. Piatt, collecting at Cwm Woods, Aberystwith, 



24th August, 1913, found several species, including one each of Hyalinia 



radiatula, Zo7iiloides nitidiis and Puiiciiim pygmaum. 

 Co. Cavan : Mr. J. Kidson Taylor's collection includes several examples of 



Clausilia laininata from Farnham, one of its very few Irish stations. 

 Cheviotland : Mr. A. M. Oliver has submitted Punctum pygi?iaicm, of which he 



found a single specimen in moss from the sandhills near Alnmouth, 8th 



February, 1913 ; also an adult example of Milax gigates var. rava, which he 



took 6th July, 1913, in the garden of Church Hill House, Warkworth, on 



the north bank of the Coquet River. 

 Cornwall West : Mr. W. Denison Roebuck observed Avion iiitermedins var. 



grisea at Mylor, at Trefusis Point, and at Gweek, on the 29th and 23rd 



September. 

 Glamorg-anshire : On the 29th May, 1913, Mr. W. J. R. Firth sent an 



interesting series of mollusca found at Treharris, amongst which was a fine 



example of Hyalinia helvetica. 

 Gloucestershire West : Prof. A. E. Boycott has recently submitted U7tio 



margaritifer, taken in the River Wye, near Staunton. 

 Herefordshire : Prof. A. E. Boycott has submitted examples of Succinea ekgans 



and Planorbis albus, both taken near Hereford. 

 Hunting^donshire : The Rev. C. E. Y. Kendall has sent Vallonia costata from 



Chesterton (several), Pupa cylindracea from Alwalton (numerous). Vertigo 



pygnma from Elton (two), and Bythinia tentacnlata froni Farcet Fen (several). 



