HELICIGONA ARBUSTORUM. » 439 
Var. luct Slavik VARIATION IN COLOUR OF LIP OF SHELL. 
ar. 1uctuosa Slavik. 
Helix arbustorum var, luctuosa Slavik, Moll. Bohm., 1869, p. 95. 
Helix themita Mabille, Bull. Soc. Philom., 1883, p. 5. 
Helix striatula Schrank, Fauna, vol. iii., p: 269, no. 3178. 
Helix arbustorum var. roseolabiata Schlesch, Nautilus, Oct. 1908, p. 55. 
The var. luetuosa is of deep dark brown or dun colour, with indistinct marblings 
and black-brown band ; aperture and lip brownish. 
This appears to be the var. roseolabiata of Roberts, and is probably also the var. 
nigrescens of Locard. 
The sub-var. themita is of a sooty colonr, and further distinguished by the 
upper and lower margins of the aperture being almost parallel. Diam. 22 mill. ; 
alt. 12-15 mill. No allusion is made to the colour of the lip, but this form is prob- 
ably correctly allocated here. 
The sub-var. striatula is distinguished by its warm brown lip, and according to 
Hartmann’s illustrative figure is a shell of otherwise normal colouring. 
ENGLAND. 
Dorset—A very black and strong shell, Marnhull ! E. W. Swanton. 
York S.W.—Sub-var. voseolabiata, Lofthouse near Wakefield, G. Roberts. 
CONTINENTAL DISTRIBUTION. 
Germany—Sub-var. nigrescens, Steinach, Baden ! E. Collier. 
Holland—Sub-var. themita, environs of Utrecht (Servain, |.c.). 
France—Sub-var. themita, environs of Bourg, Ain (Servain, Ic. ). 
Switzerland—Some hundreds of examples of var. sériatula were found by Herr 
von Schrank at St. Gallen associated with specimens of Helix pomatia, which also 
possessed the same peculiarity of violet-red or liver-brown lips. 
Austro-Hungary—Var. Juctwosa, Nuenitz near Randnitz, Bohemia (Slavik, l.e.). 
Denmark—Var. roseo-labiata is described by Schlesch from Ringsted, Zealand. 
VARIATIONS IN BANDING OF SHELL. 
This group is subdivided with a view of demonstrating and emphasizing the 
existence of atavic peculiarities amongst those specimens inhabiting mountainous 
regions, and also occurring sporadically in a few lowland areas. 
SECTION A.—The Atavie forms in which the character of the banding of 
the typical Campyleve is more or less retained, the dark peripheral band being 
placed upon and within a broader, paler, and move or less calcified zone. 
Var. styriaca Frauenfeld. 
Campyl@a styriaca Frauenfeld, Verh. Zool. Bot. Ges. Wien, 1868, xviii., p. 149. 
Helix arbustorum var. corneoliformis Lessona, Moll. Piem., 1879, p. 49, pl. iv., f. 11. 
Helix arbustorum var. jetschini Ulicny, Beitr. Moll. Mahren, 1887, p. 161. 
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GOSS 
Fic. 498. Fic. 499. 
Fic. 498.—Helix arbustorum var. styriaca Frauenfeld (after Clessin). 
Fic. 499.—Helix arbustorum var. corneoliformis Lessona (after Lessona). 
The var. Styriaca is described as very depressed, roughly striate and moderately 
umbilicated, of a dark fusecous-horny colour, with indistinet pale yellowish fliam- 
mules and strive, and a dark supra-peripheral band upon a broader pale zone. 
Diam. 225-255 mill.; alt. 125 mill. [t is figured by Kobelt (Rossm., Teon., f. 988). 
M. Schepmann describes the genital organs and ‘‘dart” as identical with those of 
H. arbustorum, but the radula as a ‘little different.” 
