MONOGRAPH OF BRITISH LAND AND FRESHWATEE, MOLLUSCA. 



89 



Limax arborum Bouchard-Ch 



antereaux. 



1774 

 1779 

 1.S-2-J 

 IS.'iH 

 lS3(j 



is:^7 



1S3S 

 1S43 



1.S4.S 

 1S.V2 

 ] S.V2 



1 S.")!) 



1,S57 

 ISTil 

 ISTI 

 1.S77 

 ISliS 

 1S7(J 

 LSSU 



Limax iiKiiyiiiii/iix Miiller, Venn. Hist., 

 — .■ird/iiiliifiiiii I<'a))ric.ius, Reise Niirwijf; 



i., p. 10, No. 206 

 , en, ]>. 298. 



— iiiinrii.s y;u: ji Nils.siiii, Hi.st. Moll. Hveciic, p. 7. 



— (jiiiliitni lioiilire, Itiill. Hi.st. Nat. Franc;'., ]>. i:-l. 



— xii/irliiiii liouillet, Cat. iMoll. Auvev.^iie, [i. 18. 



— HikIjiiIiih Helil, Isi.s, p. .•jn:-!. 



— arborum Uom-li. -Chant , JIolI. ras-de-Calais;, p 



— fl/iiiiriis anil iir/iiiiriis Clarke, jVnn. ami Ma-. N. 



— /irtiiiiriix Sclii'unk, Land n. Snsswass. Livlamls, 



— iiKirijiiKi) lis ]5anil<in. Cat. Moll. Uise, p. 6. 



— xnimlrjis Norniand, Desc. Liiiiac. Non\-., p. 6. 

 ~ .sjllnilirii.-i Coldfiis.s, Kheinjir., p. 6.), pi. 3, f. S. 



— iirljiivniiii tiray, Tnrt(jn'.s Manual, \i. 82. 



— Iifllniiii Sordelli, Atti Soc. Ital. Sci. Nat., p. 2.") 



— in/ir.y/ix var. xii.nini iii Kandon, Mrni. lainau, 



— all ills Fisehfr, Jonrn. de (.'on(di., p. 49. 

 Lc/iiiiiiiiiiiii iiKinjiiiiilii Malm, Skand. l.iinac, p. 8.S. 

 Aiiiiiliii iiiiiri/liiiifii l-'isolier, Journ. ilc Conch., ]>. ."i3. 



— iniiri/iiiiitti var. inoiii/iiiiiriisis I'auliicri, Fauna 



)1. 



Oisc, p. 19, pi, 4, ft. 1(1-12. 



Mai. Calaliria, p. 23. 



I STORY. — Liina.r arborum (arborum, belong- 

 ing to trees) has attracted the attention of some 

 of the earliest observers, and has, therefore, 

 received a variety of names, but it was nut 

 until 1h;I8 when Boiichard-Chantereaiix un- 

 mistaka.fily described its peculiarities that a 

 name was applied to it with certainty. 



Thoug-h it is probable that previous authors 

 had this slug before them, their descriptiiuis 

 are not such as to remove all do\ibt, and have 

 therefore given rise to much controversy, so 

 that it has been deemed advisable to adojit 

 the first name about which no difference of 

 opinion has arisen. 



The L'uiKt.v marginidas of iliiller, the L. 

 scopulorum of Fabricius, L. syhvstris of iSco- 

 poli, L. gagates of Boub^e, L. mlivium of 

 Eouillet, and L. limbatus of Held, according 

 to many of the liest authorities, are all prob- 

 ably referable to L'nmix arborum, but the mar- 

 gin of doubt that exists precludes the use of 

 any of these names for the species. 



Though classified with L.^flavntf mainly on account of the exact similarity 

 of their alimentary systems, yet this location is not altogether satisfactor)', 

 as the sexual organs demonstrate a close relationship with Agriolimax, from 

 the Caucasian stock of which group Simroth believes this species to have 

 been derived, the connecting links being still existent in Abyssinia; Lima.r 

 arborum therefore connects the Agriolimaces with the typical Liniaces, par- 

 taking t(j some extent of the peculiarities of each. 



With this species, so especially identified with the power of spinning 

 mucous threads, we have associated Mr. H. Wallis Kew, F.Z.S., of Ilornsey, 

 Loudon, who has devoted so much time and ability to the investigation of 

 the phenomenon of thread-spinning in moUusks as well as other animals. 



^XiirA^iirf(£ ur 



