, 
994 HELIX NEMORALIS. 
The three-banded forms are twenty-five in number : 
1 23:00 (12)005 0(234)0 023005 
(123) 00 1-023" Ox5 0(23)40 0(23)05 
(12)300 10340 02(34)0 0. 20425 
1(23)00 10(34)0 00345 020(45) 
1° 2'0-4.0 10045 00(345) 
(12)040 100(45) 00(34)5 
12305073 02340 003(45) 
The formula 00345 is much the most abundant form, 12300, 02340, and 
10305 being far more uncommon. The (123)00, (12)040, (12)005, and 
()2(34)0 are only on record for Germany, and have not yet been reported 
as British ; while 10045 and 0(234)0, reported by Mr. C. E. Wright are, as 
far as at present known, peculiar to this country. 
The remaining seventeen are all quite rare, and very few specimens are 
known. 
The two-banded varieties are fourteen in number : 
12000 00340 10300 02005 
(12)000 00(34)0 10040 00305 
02300 00045 10005 
0(23)00 000(4 5) 02040 
he commonest varieties are 00045, 10300, 00305 and 00340. ‘The formula 
(12)000 is only at present known from Germany, and 02040 from this 
country ; while 02005 and 10040 are reported from the British Isles and 
America. ‘lhe remainder are all very uncommon or rare, but are known 
to exist in this country and abroad. 
he one-banded form exists in five varieties only : 
1O0000 00300 00005 
02000 00040 
The formula 00300 being very common, the remaining four are rare, all of 
which are apparently more common on the continent than in this country. 
The formula 00300 is always the most abundant form, 00040 and 00005 
being quite uncommon in the British Isles, though not so rare as 10000 
and 02000. 
The bandless form 00000 is one of the very commonest varieties in 
this country and abroad. 
VARIATIONS IN FORM OF S#HiELL, 
Var. acuminata Baudon. 
Helix nemoralis var. acuminata Baudon, Moll. Oise, 1862, p. 19. 
Jlelix nemoralis var. conoidea Clessin, Nachrichstbl. Deutsch. Geseilsch., 1871, p. 126. 
Helix nemoralis var. elevatus Norguet, Moll. Nord. 1872, p. 272. 
Helix nemovralis var. conica Pascal, Moll. Haute Loire et Paris, 1873, p. 34. 
Helix nemoralis vay. trochoides Clessin. 
The var. acuminata is held by its author to be 
sufficiently described by its name; he, however, in his 
1884 catalogue substituted the name coniea for that of 
acuminata on the ground that the shell was really 
more conical than acuminate. 
The sub var. econoidea is described as more ele- 
vated, so that the peripheral or third band is clearly 
visible to the apex. Diam. 22 mill. ; alt. 18 mill. The Fic. 958: alee aeons 
illustrative figure (Deutsche Moll. Fauna, p. 207, f.  sub-var.  conoidea _ Clessin. 
121) has an equal diameter and altitude of 23 mill. (Seacroft, near Leeds). 
