I38 JOtJRKAI. OF CONCHOT.OGY, VOL. 12, NO. 6, APRIL, I90S. 



C. Pfeiffer, in his work on the German Mollusca, pubhshed in 182 1, 

 called another form of the same species Carychium menkeanum, 

 giving an excellent description and a figure.^ Since his account is 

 much more complete than Ferussac's, and of the same date, so far as 

 I can learn, it seems best to use the name menkeana for the species. 

 The English form is varietally separable from typical A. menkeana by 

 the absence of teeth deep within the last whorl, and the usual absence 

 of a lower palatal plica below the marginal lip-tooth. In A. menkeana 

 two small internal teeth are visible from the outside as whitish spots 

 on the back of the last whorl, and a lower palatal tooth is ordinarily 

 present. Typical A. menkeana is the prevalent form in Germany and 

 France. 



The nomenclature, if I am right in the positions taken, will stand 

 thus: 



Azeca menkeana (C. Pfr.). Type loc. Pyrmont. 



var. gooda/lt {Ytx.). Type loc. "by the River Stour." 



As synonyms of A. menkeana goodalli the following names will fall: 

 Turbo tridens Pult. non Gmel., Carychium politum Jeffreys, Pupa 

 brittanica Kenyon, Azeca matoni Turton, A. nouletiana Dupuy. 



In the eastern Pyrenees and adjacent regions a form described as 

 A. 7iouletiana Dupuy (1849) occurs. So far as I have been able to 

 learn from the literature and from a series received from Terver, this 

 form is not distinguishable from the English race goodalli. This adds 

 another case of discontinuous distribution of a British and South 

 European stock. It may be significant that goodalli and nouletiana 

 are more primitive than typical A. menkeana. 



The variety " cristallina" Dupuy was based on albino examples of 

 " nouletiana " and if, as I believe, nouletiana a.nd goodalli SLve identical, 

 the albino British gooda/li, such as the beautifully clear glassy examples 

 found at Ilkley, may correctly be referred to Dupuy's cristallina. It 

 seems, however, to be merely a sporadic variation, not of racial 

 significance. 



Vitrea rogersi with Pale Animal. — Among a small lot of Vilrea rogersi at 

 Hendon there was one individual with the animal light cream colour, almost white. 

 As the animal of this species is usually a dark slate colour, an abnormal specimen 

 like this seems worthy of record. The shell was normal. — J. E. Cooper {Read 

 before the Society, Nov. 13th, 1907). 



I Systematisches Anordnung uiid Beschreib. Deutscher Land- und Siisswasser- Schnecken 

 p. 70, pi. 3, fig. 42. 



