2:34 JOURNAL OF CONCHOLOr.Y, VOL. I3, NO. S, OCTOUER, I9II. 



Vitriihi elongata Drap., Hist, des iMoII., />. 102, /. 8, f. 40. 



From Britonsferry ^Vood near Swansea ; very rare. Except in 

 the fewer volutions and less orbicular form (characters which do 

 not alter with the growth of the shell), I should have been inclined 

 to consider this as the young of V. Miilleri. 



Draparnaud's representation of this shell is very incorrect and 

 by no means agrees with his description." 



In a Supplement^ to the foregoing we find the following reference 

 to both V. drapar/ialdi ?Ln6. V. elongata ]u%t mentioned: — 

 " V. drapar/ialdi, p. 326. 



Helicoliiiiax audebardi Ferussac, Prodr., p. 21. 



In addition to the locality before mentioned, I have to add that 

 I lately found a specimen on Mount Edgecumbe near Plymouth. 

 It is an intermediate species between the last and the Helix 

 diaphaiia of Drapamaud. 

 V. elongata, p. 327, lege Dillwynii, Jeffreys. 



This being a different species from the V. elongata of Drapar- 

 naud, I have ventured to dedicate it to my friend, L. \\\ Dillwyn 



Esq. " 



And, accordingly, it appears in his "British Conchology," vol. i, 

 p. 157, as follows : — 



"Var. 2, Dillwynii. — Shell nearly globular, with the last whorl 

 very convex. Spire more prominent.— K Dillwynii, Jeffr., I.e. 

 p. 506." 



But notice the discrepancy of this with the former description ; 

 the former description said "less orbicular" than V. miilleri — nc)w 

 we find the exact opposite to be the special characteristic. 



Gray, in his edition of Turton's Manual (1S40) says (p. 121): — 



" Mr. Jeffreys has described three British species of the genus, 

 but Mr. Alder observes that ' Mr. Jeffreys having kindly favoured 

 me with specimens of his V. Draparnaudi, I compared them care- 

 fully with specimens of Helicoliniax atidebardii Fer., collected on 

 the Continent, and have come to the conclusion that they are not 

 of that species. I am afraid that V. Draparnaiidi can only be 

 classed as a variety of V. pellucida {Helicoliniax pell acid us Fer.). 

 Mr. Jeffreys now considers his V. diapliana to be only a variety of 

 the same ' 



" Mr. Alder having communicated to me the specimens referred 

 to above, after careful examination, I have come to tlie same 

 conclusion ; indeed, /'. Draparnandi appears to be hardly a 

 variety ; . . . . 



I Liiu). Trans., \'ol. xvi., p. 506. 



