80 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



copying without reference to the original source when under 

 Testacellus haliotideics he added " J'ai cru devoir conserver a ce 

 genre le veritable nom qui lui avait ete impose par Faure-Biguet, 

 Bull. Soc. phil. No. 61 ", which reference he obviously took from 

 Ferussac. 



1855. Grateloup (Distrib. geogr. fam. Limaciens, pp. 15 and 16)., 

 not satisfied with the existing names of the species, superfluously 

 suggested others, and even for maugei two other names. 



From the foregoing, therefore, it becomes apparent that the three 

 British representatives of the genus should be known as : — 



1. Testacella haliotoides, Lamarck. 



T. maugei, Ferussac. 



2. europwa, Roissy. 



T. haliotidea, Draparnaud. 



3. scutulum, Sowerby. 



The more extended synonymy may be reserved for another occasion. 



Several Continental forms of Testacella have been described at 

 different times and attempts have been made to reconcile these 

 with one or other of the above species. Until, however, much more 

 complete knowledge of these is to hand it seems better to treat 

 them as distinct after the manner of Gassies & Fischer, and of 

 Bourguignat, than to guess at their possible affinities. More 

 especially should species founded on imperfectly preserved fossils, 

 some of which date back to.the Miocene, be severely let alone. 



MM. Gassies & Fischer concluded their monograph with a list 

 of thirteen species which have been included in, but do not belong 

 to, the genus Testacella. Strangely enough the twelfth is a myth 

 of their own manufacture. " Testacella teneriffce, D'Orb., pere 

 ined. in Fer." resolves itself in the original (Ferussac, Hist. Nat. 

 Moll., ii, p. 87) into " Description communique par Mr. d'Orbigny 

 sous le nom de Testacelle de Tenerilfe", Ferussac's own name 

 for the animal being Plectrophorus orhignii. Liberties of this sort 

 give an infinity of trouble to the student. Moreover, apparently 

 by misreading d'Orbigny 's statement (in Webb & Berthelot, Hist. 

 Nat. lies Canaries, tom. ii, pt. 2, 1839, p. 49) that Testacella 

 haliotidea, Drap., occurred " dans I'ile Canarie " [i.e. in Grand 

 Canary] as " dans les iles Canaries ", or the archipelago generally, 

 they concluded that it occurred in Teneriffe also, which it seemingly 

 does not, and proceed to make deductions therefrom that cannot 

 be maintained. Orbigny's opinion was that maugei, Fer., was a 

 climatal variety of haliotidea, Drap. 



Helix acuta, Miiller. 



We have recently maintained (Journ. Linn. Soc. (Zool.), xxxiv, 

 1920, pp. 206-207) that Linne's name of Helix barbara must be 



