77 



NOMENCLATORIAL NOTES RELATING TO BRITISH NON-MARINE 



MOLLUSCA. 



By A. S. Kennard, F.G.S., and B. B. Woodward, F.L.S. 



Read Uth Hay, 1920. 



Testacella. 

 The history of this genus was well summarized by Gassies and 

 Fischer in 1856 in their " Monographie du genre Testacella " (Actes 

 Soc. Linn. Bordeaux, xxi, pp. 195-248), whilst in December, 1861, 

 Bourguignat published, by way of a supplement, his " Notice sur 

 les especes vivantes et fossiles du genre -Testacella " (Rev. & Mag. 

 Geol., ser. ii, torn, xiii, pp. 513-24. — Reissued in his Spicileges 

 MalacoL, 1862, pp. 55-68). These two papers, however, were not, 

 of course, conceived as regards nomenclature in the same light 

 that obtains to-day, and hence modifications in their conclusions 

 have become necessary, especially with regard to the three species 

 present in Britain, with which alone we propose to deal. 



A brief summary of the history of the genus, drawn mainly from 

 Gassies & Fischer, is necessary to the understanding of the case 

 we present. 



1740. The first published notice of these molluscs seems to have 

 appeared in 1740, when a M. Dugue wrote from Dieppe to Reaumur 

 concerning the discovery in his garden of a slug carrying on its 

 hinder end a claw-shaped plate. (Hist. Acad. Sci. Paris, 1740 

 [1742], pp. 1 and 2.) 



1754. In this year it is said that a M. La Faille, of La Rochelle, 

 made a similar communication to Guettard, but his observations 

 were not published. 



1774. La Faille seems to have sent Favanne a specimen in spirit, 

 attributing the discovery to Dr. Guillemeau, of Niort. 



1779. The Viscount De Querhoent, of Le Croisic in Brittany, 

 wrote to Valmont de Bomare detailing the exhumation by his 

 gardener, in October of that year, of a slug which was preying upon, 

 and had partly swallowed, a worm. (Diet. rais. univ. Hist. Nat., 

 ed. 4, torn, iv, 1791, p. 579.) 



1780. Favanne de Montcervelle and his son when producing 

 the third edition of Dezallier d'Argenville's " Conchyliologie ", 

 appended a series of plates under the title of " Traite de la Zoo- 

 morphose". Here on pi. Ixxvi they depicted certain " Limaces a 

 Coquilles ", one of which may well have been taken from the specimen 

 received as above recorded from La Faille, although no mention is 

 made thereof. 



1796-98. By order of the French Government an expedition to 

 the islands of Teneriffe, La Trinite, Saint- Thomas, Sainte-Croix, 

 and Porto Rico, under the command of Capt. Baudin, was sent out 



