HYALINIA NITIDULA. 73 
The Marchioness Paulueci has also described an Italian var. amiata, 
characterized as less convex, greenish, very glossy, last whorl less convex 
beneath, and lower margin of aperture less arched. Diam. 8—9 mill.; alt. 
4 mill. The H. nitens var. sicula from Sicily, described as more finely 
striate and with a less dilated last whorl, would seem to be scarcely 
different from the typical nitédula. 
Irish specimens would appear to almost constitute a geographical race, 
the bulk of the specimens being characterized externally by a noticeably 
paler and almost colourless shell. 
VARIATIONS IN SHELL. 
Var. nitens Michaud, Compl. & Drap., 1831, p. 45, pl. xv. f. 1-3. 
Helix nitens Michaud, |.c. 
Hyalina nitens var. lindensts Westerlund, Fauna Paliarct. Binnen-Conch., 1886, p. 64. 
SHELL with the last whorl much expanded 
laterally, umbilicus more open and excentric. (©) Cr ay 
Original Description. — ‘‘ Helix nitens, H. : 
testa orbiculato-depressé, umbilicaté, umbilico x -: : 
5 : : : ‘ riche ys : FSH Fic. 111.—AH. nitidula var. nitens 
pervio, tenui, diaphand, nitid’, minutissimé — y4gjchaud (after Michaud). 
longitudinalitér striaté, sepius  corneo-fusca, 
interdum virente-albidaé, subtis pallidiore; anf. quaternis subplanis ; apertura 
depressi, obliqué, expansi; peristomate simplici, acuto. Hauteur 15 ligne. 
Diam. y compris ouverture, 4 lignes. Diam. non compris ouverture, 3 lignes.” 
= MN . zi ae 5 
—MICHAUD, Compl., 1831, p. 45. 
The odontophore of H. nitens is, according to a Bavarian example examined by 
Heer Schepmann, practically the same as that of H. nitidula, but the median teeth 
. > . . . 3 
are a trifle narrower and the longitudinal rows slightly less numerous. 
m, 7. 2 
3, 4. ; 16. 
‘i 6. g. 6 
; } Ve ja fA v4 " 
Fic. 112.—Representative denticles rom a transverse row of the odontophore of Wyalinia nitens 
from Miesbach, Bavaria, x 200 (after Schepmann). ‘The formula is given as 4®+$+4+8+ 4%. 
The sub-var. lundensis is described as rufous-horny in colour above, white 
below, closely and regularly striate, and scarcely dull ; aperture elongately oval. 
Diam., 10 mill. ; alt., 5 mill. 
This form, which on the continent is very generally regarded as a distinct 
species, is said to be quite synonymous with the Helix tenera Faure Biguet, the 
Helix splendidula of Ziegler, and probably identical also with Helix lucida of 
Pulteney and Beck, the Helix nitida of Risso, and the Helix sabaudiana Bourg. 
Michaud’s original description of Zonites nitens gives the shell as dark horny, 
which Dr. Jeffreys alters by characterizing the shell as of a lighter colour than 
Hyalinia nitidula and of a dull and waxy appearance. The differential character 
in this form is the greater amplitude of the last whorl, and I have, therefore, 
practically restricted the description to this feature. 
In France this form inhabits moist places under moss and stones in woods in 
hilly or mountainous localities with a northern or western aspect. It is also re- 
corded as living abundantly in the meadows and marshy lands margining the rivers. 
In this country it is noted as found almost solely in boggy or marshy places, 
and is said by Dr. Jeffreys to be more widely distributed than the typical form. 
On the west coast of Corsica, when living among the primitive rocks, the shell 
is said to be remarkably thin and transparent, and is probably the Helix tenera 
I.B., recorded as living in Saxony. 
ENGLAND AND WALES. 
Devon S.—Matford and Alphington (Marquand, J. of C., Oct. 1889, p. 138). 
Isle of Wight—Carisbrooke, July 1869 (Lecomte, Bull. Mal. Soe. Belg., 1869). 
Hants. N.—Rockingham Park, May 1896, Lionel E. Adams. 
Surrey—Grove lane, Camberwell (D. Cooper, Flora Metropolitana, 1836, p. 122). 
Boxhill and Headley lane (Loydell and Rowe, Moll. London District, 1883, p. 21). 
Caterham, Aug. 1885! T. D. A. Cockerell. Croydon (C. Pannell, J. of Conch., 
July 1903, p. 332). 
