82 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Draparnaud, in 1801 (Tabl. Moll. France, p. 68), first described 

 two kindred forms as Bulimus acutus and B. ventricosus. The name 

 of the first was evidently taken from Bruguiere. The dimensions 

 and the figures cited, Gualtieri's " I " and Lister's " 14 ", show 

 that this again was the form we have in England and identical with 

 Miiller's and Bruguiere's. In the synonymy Draparnaud cited with 

 a " ? " Helix barhara, Linn. This last reference is omitted in his 

 later " Histoire ". 



In illustration of his B. ventricosus Draparnaud cited Gualtieri's 

 figures L and N, whilst in synonymy the Helix acuta, Miiller, and 

 Bulimus acutus of Bruguiere appear.^ 



Now by this synonymy did Draparnaud mean to imply that 

 without specifically mentioning it he adopted Bruguiere's name for 

 the one form and merely cited Miiller and Bruguiere under the 

 other to show that they had, in his opinion, included the two forms 

 under one narne ? The following sentence under Bulimus ventricosus 

 in the " Tableau ", but omitted from the " Histoire ", seems to 

 show that he did : " Coquille plus courte et plus ventrue que la 

 precedente, avec laquelle il paroit que les conchyliologistes I'ont 

 confondue." 



Moreover, Draparnaud was hardly likely to have overlooked the 

 fact that his predecessors had cited Lister's fig. 14 as he did, and 

 that their dimensions tallied with his. 



In our opinion there was nothing that would justify the inclusion 

 in its entirety of the Bulimus acutus of Miiller and Bruguiere as 

 a synonym of Draparnaud's B. ventricosus 



This seems to have been the mature view of Ferussac, for 

 although in the " Concord Systematique " at the end of his " Essai ", 

 1807 (pp. 120-121), he made Bulimus ventricosa [sic] the equivalent 

 of Helix acuta, Miiller, and Bulimus acuta [sic] the synonym of 

 Helix harbara, Linn., when he wrote his " Tableau Systematique 

 de la famile des Limayons " in 1821 we find (Jan. ed. p. 56, June ed. 

 p. 52), under Helix {CocMicella) : — 



No. 377 ventrosus, nobis [corrected p. 74 (or 70) to ventrosa^. 

 Bulimus ventricosus. Draparnaud. 

 Helix acuta, Miiller. 



No. 378 acuta, Miiller. 



Helix bifasciata, Pulteney. 

 Turbo bifasciatus. Pennant. 

 Bulimus acutus, Bruguiere. 



No. 379 barbara, Linne, etc. 



'' . . . Rien ne prouve que cette espece soit la prece- 

 dente." 



1 Draparnaud further queried (p. 69) whether the Helix ventricosa, Miill., 

 were only a variety of this species. Moquin-Tandon, however (Hist. Moll. 

 France, ii, p. 279, note), stated that it was the young of Bulimus obscurus. 



