LIMAX CINERBO-NIGER. 59 



The numerous modifications discriminated by various authors have, for 

 convenience of study, been grouped into several sections, based upon the 

 fundamental colour of the body, those 'varieties which have retained to a 

 marked degree in adult life the immature character of their colouring being 

 regarded as sub-varieties. 



FUNDAMENTAL BODY-COLOUR WHITE. 



Var. palleseens Dum. & Mort., Mai. Savoie, 1857, p. 13. 



Untax Imeattis var. palleseens Dum. & Mort., op. cit. 



Limax cinereo-nigcr var. albicans Malm, Skand. Limac, 1868, p. 61, pi. 5, f. 13. 



Limax cinereo-niger- var. isseli Pini, Moll. Eriino, 1876, p. 26, pi. A, IT. 4, 5. 



Limax alhus Paasch, Archiv f. Naturg., 1813, p. 85. 



Limax cinereo-niger var. hareri Heyii., Mai. Bl., 1SG2, p. 141. 



Animal white or whitish, with or witliout darkly tinted side-areas to the sole. 



Dumont & Mortillet remark that this form is found in very shady places. 



The form named by Heynemann, harepi, is pure white ; L. einepeo-nig'er 

 var. albicans and L. lineatus var. palleseens are whitish ; while L. cinereo- 

 niger var. isseli has the body whitish and a white keel. 



Not hitherto recorded from the British Isles. 



Germany— An albine form, from Hohen-Wittlingen, Bwahian Alps (Weinlaud, 

 Nachrichtbl, 1874, p. 42). Sub-var. hareri, in the Taunus Mountains, June 1861 

 (Heynemann, op. cit.). 



France— Haute Savoie (Dumont & Mortillet, op. cit.). 



Italy — Sub- var. isseli, Esino Valley, near Vezio in Lombanly (Pini, op. cit.). 



Sweden — Sub- var. albicans, common on Bornholm ; and has also been found near 

 Ljungskile, and on the Alingsas tract (Malm, op. cit.). 



Norway— Sub- var. alba, Bamble, Christiansand Stift(Esmark, J. of C. , 1886, p. 100). 



Var. stFObeli Lessona, Moll. Piemonte, 1880, p. 21. 



Limax cinereo-niger ^ strobeli Lessona, op. cit. 



Keel and median-line whitish, sides of body ashcoloured but showing the white 

 ground colour as a series of whitish niaeulations with a single black band on each 

 side, broken up into a row of spots ; shield ash-coloured. Formula 001 100. 



Not hitherto recorded for the British Islea. 



Italy— Maccugnaga, Val Anzasca, Piedmont, at an altitude of 1,323 metres (about 

 4,340 feet) (Lessona & PoUonera, Mon. Limac. Ital., 1882, p. 30). 



Var. vera Dumont & Mortillet, Mai. Sav., 1857, p. 13. 



Limax antiquorum var. /S Ferussac, Hist. Moll., 1819, p. 68, pi. 4, f. 1. 



Limax antiquorum Y-Xerrussackii Kaleniczenko, Bull. Soc. Imp. Mosc., 1851, p. 120. 



Limax lineatus var. verus Dumont & Mortillet, op. cit. 



Limax lineatus var. interruptus Dumont cfe Mortillet, op. cit. 



Lijuax cinereo-niger var. albicans, cinereo-nebulosus Malm, Skand. Limac., 1868, p. 60. 



Limax cinereo-niger f} slabilei Le.ssona, Moll. -Piemonte, 1880, p. 21. 



Keel whitish, two dark zones on each side of the body. Formula 021 120. 



The Limax antiquorum var. /? of Ferussac, though usually referred to as uni- 

 formly cinereous, is according to the figure distinctly quadrifasciate, with paler 

 nebulous markings around the margin of the shield, and therefore belongs to this 

 form. The reference by Kaleniczenko to Ferussac, Hist. Moll., pi. 4, f. 1, would 

 seem, though not with certainty, to place his variety under this head. 



The var. vera s.st. has the two black bands on each side and a dark shield. 



The sub-var. interrupta differs in the lateral bands being interrupted. 



The sub-var. cinereo-nebulosa has the keel tinged with yellowish, shield yel- 

 lowish clouded with grey, sides of body whitish clouded with grey, lateral zones 

 resolved into series of pale brown spots. 



The suh-var. stabilci has the keel yellowish, the back blackish, and sides paler. 



Oxford — Sub-var. vera, a young specimen from O.xford in the British Museum, 

 presented by the Rev. A. M. Norman. 



Germany— Heynemann records a sub-variety from Rastadt in Baden, with two 

 rows of squarish black spots at each side, upon a white ground (Mai. Bl., 1862, p. 99). 



France— Sub-vars. vera and interrupta. Haute Savoie (Dum. &-Mort. , op. cit.). 



Italy — Sub-var. stabilei found in Piedraontese Alps by Stabile (Lessona, op. cit.). 



Sweden — Sub-var. cinereo-nehulosa at Ljungskile (Malm, op. cit.). 



Norway — Sub-var. cinereo-nebulosa at Malmons, Laurvik, and Skien (Esmark, 

 J. of Conch., Oct. 1886, p. 100). 



Russia— Sub-var. ferrussackii Kal., Tchernigpv and Poltava (Kalen., op. cit.). 



