HELICIGONA ARBUSTORUM. 427 
VARIATIONS OF FORM OF SHELL. 
Var. trochoidalis Roffiaen, Ann. Soc. Mal. Belg., 1868, vol. iii., p. 69, 
pl. 1, f. 2a, b. 
Tlelix arbustorumt var. conotdea Westerlund, Exp. Crit. Moll. Suéde, etc., 1871, p. 42. 
Helix arbustorum var. trochiformis Wattebled, Journ. de Conch., 1889, p. 320. 
Helix feroedi Bourguignat in Servain, Bull. Soc. Mal. France, 1889, p. 370. 
Helix aléulana Bourguignat in Servain, op. cit., 1889, p. 388. 
Helix thamnivaga Mabille, Bull. Soc. Philom. Paris, 1883. 
Helix thammnophila Servain, Bull. Soc. Mal. France, 1889, p. 374. 
Helix trochoidalis Servain, Bull. Soc. Mal. France, 1889, p. 378. 
Heltx xatarti Servain, Bull. Soc. Mal. France, 1889, p. 392 (not Farines). 
SHELL of medium size, with a more ele- 
vated and conoid spire than the type, and 
nearly subsealariform. 
Diam. 19 mill. ; alt. 20 mill. 
The sub-var. eonoidea is banded and 
subperforate, and a larger, ruder, more elate 
form than the type, described as possessing 
subeostulate sculpture and pale valli spots > 
with closely confluent transverse lines. Fic. 482.—H.. arbustorum var. trochoidalis 
Diam. 23-24 mill.; alt. 25-26 mill. oe Ga a 
Gieedh var trochiformis is described Andeer, Grisons, Switzerland (after Roffiaen). 
as a rather fragile shell, of medium size and globosely conical, with a blunt apex, 
and spotted and flammulated with yellow. Capt. Wattebled remarks that this 
variety differs from var. a/picola by its much greater size, blunter spire, and deeper 
coloured but thinner shell. 
The sub-var. Xatarti of Servain is conoid in form, greenish-yellow in colour, 
with indistinct fleckings and a dark peripheral band. Diam. 19; alt. 18 mill. 
The sub-var. thamnivaga has an elate spire, and a voluminous body whorl ; 
it is also thinner, dark fawn in colour, with yellowish marblings, and a dark supra- 
peripheral band, as in the typical form. Diam. 20; alt. 18 mill. 
The H. thamnophila would seem to be merely a lapsus penne or synonym for 
thamnivaga. 
The sub-var. feroeli is described as_ rimate, 
conical in shape, with rapidly inereasing whorls, 
and allied to but less elevated than sub-var. thammni- 
vaga. It varies from yellowish to a copper colour or 
a greenish shade with or without marblings or band. 
Diam. 22 mill. ; alt. 18 mill.; andan aperture 11 mill. 
in altitude and width. Dr. Servain cites Clessin (Exe. 
Moll. 1884, f. 107) as figuring this form as var. Wine YdBg 2 yeiee reer Se: 
trochoidalis. arbustoruntv. trochoidalis Clessin 
The sub-var.-albulana is described as quite caer ce 
trochoid in form, but normal in colouration, and as 20 mill. in altitude, and 24 mill. 
in diameter ; and the aperture as 12 mill. in width and 11 mill. in altitude. 
ENGLAND AND WALES. 
Wilts. S.—Devizes, C. D. Heginbotham. 
Sussex E.—Pells, Lewes, J. H. A. Jenner. 
Northampton—Sub-var. conoidea, Brackley, A. Loydell. Weston-Favell, Lionel 
E. Adams. 
Pembroke—In lane near Hoyle’s Mouth, Tenby, A. G. Stubbs. 
Cardigan—Llyfnant Valley near Borth, Aug. 1905! A. H. Jowett-Murray. 
Lincoln S.—Mere, Feb. 1902 ! Rev. W. Wright Mason. 
Lincoln N.—North Ormsby and Wyham, Oct. 1900 ! C. S. Carter. Howsham, 
1901 ! Rev. E. A. Woodruffe-Peacock. Bardney, Oct. 1906! J. F. Musham. 
Notts.—Sub-var. conoidea, Darlton, B. Sturges Dodd. 
Derby—RKiepton ! E. Candler. Clifton near Ashbourne, C. E. Wright. On road 
to Winnats, Castleton, July 1901 ! J. W. Jackson. Sub-var. ferocl/, Buxton 
(Servain, ].c.). 
Cheshire—Holines Chapel, Rev. H. G. Barnacle. Whaley Bridge, Sept. 1895, 
C. Oldham. Northwieh, June 1903! J. W. Jaekson. 
Lancashire S.—Clitheroe, July 1886! J. A. Hargreaves. Sub-var. fevoedi near 
Manchester (Servain, l.c.). 
