72 HELICID-. 
v. lutea of hortensis), the coloured-lipped “ortensts are 
red. When, however, doubt exists, the ‘‘dart” should 
‘be procured by following the directions given in the 
Introduction, p. 12. 
Mr. Chas. Ashford once informed me that “‘the rapid 
fading of the peristome tint appears to be pecular to 
ff. hortensts as distinguished from /7. memoralts. In fact 
it is an accidental colouring in the former case and a 
normal one in the latter.” This fact; which I have since 
fully verified, is an additional reason for considering the 
two species distinct. 
The same variety often differs in different localities, 
the form //acina for instance is sometimes found of a 
pale homogeneous lilac, more often clouded in patches, 
and sometimes, in South Devon for instance, almost runs 
into the o/¢vacea form, and is there tinged with yellow. 
The handsomest and perhaps rarest form of both this and 
the last species is v. voseo-zonata. 
a size. V. 1. minor (Mog.). Smaller. 
V. Il. albina (Mog.). White. 
V. III. “itea (Afog.). Yellow. 
b. colour. « V. IV. zacarndta (Mog.). Reddish. 
V. V. oltvdcea (Taylor). Olive brown. 
V. VI. “ilacina (Taylor). Blush violet. 
