MilNOGRAPtl OF BRITIStI LAND AND FRESHWATER MOLLUSCA. 



53 



Limax cinereo-niger Wolf. 



pp. a ami ;. 



1774 Limax ciiirntin varr. a and e MUlIer, Verm, Hist., i 



1789 — Kfrr KazduiiKiwsky, Hist. Nat. Joiat, p. '266. 



18(13 — cinereo-niger AY<ilf, in Sturm's Deutseli. Fauna, fasc. ], 



1804 — (iiiiiiniph'ii-ns Renicr, I'rodi-. (Jiasse d. Vermi Adriatico. 



1819 — iintiijuontm, Fer., Hist. INIoll., p. 68, pi. iv., f. 1, pi. 8.V, f. 1 \- pi. 8ii, f. '1. 



1821 — itliniiu.-i Fei-., Tabl. Syst., p. 21, ]d. 4.\, If. 3-7. 



1822 — I'itl'qics lionelli, MS., ftlus. Tauiin. 

 1836 — iiKiiinis Held, in Isis, p. 271. 



LSril — liilobatns Hay & Dniuet, Moll. f'hanii>at;ne, p. 16. 



18.V2 — /meatus Duniont & Mortillet, Hist. jMnll. Savoie, p. 192. 



18.")4 — ihicmnpi Menegazzi, JIalae. Veronese, p. 63, pi. 1, ft'. 1-4. 



185.) — rnr.^iriis Moquin-Tandon, Hist. Moll. France, ii., p. 26, pi. 3, IF. 10-13. 



1855 — r/r?/7((Vf//r'/(,v/,v Drouet, t. Mo(]nin-Tandon, op. cit., p. 28. 



1861 — ilurid' IJcjur-., Kev. ct Mag'. Zool., p. 256, pi. 8, tF. 1-11. 



1862 - nii/ailini'iisis Heyn., Mai. I'.l, p. 204. 



1862 — ^v',//.s77,7'//;'7f Heyn., Mai IJl., p. 216. 



1863 — iiiiliii/riiiii- \Umig'., Spic. Mai., ji. 20. 



1864 — n-iilhrus IJuuvg., Mai. Grande Oliartrense, p. 31, pi. 2, IF 1-8. 

 1867 — iiigcr Malzine, F'aune IMal. IJelgique. 



1871 — iiiuntfduts Leydig, A'erliandl. Wurtt., p. 210. 



1873 — hirl-.ii Seibert, Mai. 1!1., p. 195. 



1881 — ciiicrcus fi liiteriiicdiii Breviei'c, J. de C'oncli., [i. 314. 



1894 — Iirdlcyl Oollinge, Journ. of Mai., iii., pji. 51, 52, ami iv., pj). 4, 5, 1895. 



1849 Arion /iiicnfus Duniont, Bull. Soc. Hist. Nat. Savoie, p. 64. 



1S68 Eiiliiiiii.i' rineiro-nif/ci' Malm, Skand. Limac, p. 57, pi. 5, If 12, 13. 



1876 Liiiiiifflln cinn-i-ij-riirjer .Toiisseaume, Bull. Soc. Zool. France, p. 99. 



HISTORY. — Lhwix cinereo-nigcr (ciuereo- 

 itifjer, ashy-black J, is one of tlie largest 

 and most brilliantly coloured of tlie Euro- 

 pean slugs, if the allocation by Simroth of 

 the gorgeous Italian forms to this species be 

 correct, the colouration of these magnifi- 

 cent Limaces ranging from black to Avhite, 

 through vivid red, bright yello^v, grey or 

 brown, and in size far exceeding the largest 

 L. mtLrimiis. In the cool and moist climate 

 of the British Isles, ho\vever, this species is 

 uiiiisuall)' constant in its colouring, and 

 otters little variation from a more nr less 

 uniformly darlv pigmentation. 



With this, the finest species of the gi'oup, 

 we associate Herr D. F. Heynemann, of 

 Frankfort, whose services to the cause of 

 Limacology can scarcely be overestimated, 

 and in recognition of wliose labours Malm 

 constituted the group Hey n email nice to em- 

 brace the present species and its close allies. 

 Although, in common with Dr. Simrotli 

 and many other malacologists, Herr Heynemann regards Lhiiu.r ciiiereo- 

 nifji'v as only a form of Llina.v ma.rimH.% "changed by food, climate, or 

 anything else," it is possible that this belief is iu many cases based upon 

 a i)re-conceived opinion, which an accurate appreciation of the undoubted 

 ditt'erences would probaljly modify, as, though both sjiecies have certanily 

 sprang from the same stemma, cinereo-iiiijiT is undeniably the more ancient 

 offshoot, e.xhibiting such an assemblage of divergent characters as seems 

 conclusively to .show that it has finally parted company with L. ma.vimus. 



13/3,03 '^ 



