340 Mr. Jerrreys on the Testaceous Pneumonobranchous 
21. NiTIDULA. 
:92. 
Animal griseo-maculatum, pellucidum. | Sustentaculum al- 
bescens. 
Testa depressior, nitida, glabra, cereo-lutescens, subtus 
albida. Anfractus vix 5, convexiusculi. Apertura 
magna, subovata : peristomio simplici. Umbilicus plus- 
quàm patens. 
Long. 0.2.—Diam. 0.4. 
Helix cellaria. Müll. Verm. 2. p.28? Gmel. Syst. Nat. 1. 
p. 3634, Dillw. Cat. 2. p. 193. 
nitidula. Drap. Hist. des Moll. p. 117. 
8. minor, albida, diaphana, subcarinata ; anfractibus sensim 
decrescentibus. 
Helix nitidula, 8. Drap. Hist. des Moll. p. 117. t. 8. 
f. 21, 22. 
nitidosa. Fér. Tabl. des Anim. Moll. p.41. 
Not uncommon under stones &c. in sheltered places. 
The variety is a very pretty shell, and approaches in form 
to the Helix rufa (Helicophanta, Férussac) of Drapar- 
naud. 
Lucina. 
Animal cærulescenti-griseum. Sustentaculum albidum, pel- 
lucidum, elongatum. Tentacula flexilia. 
Testa depressa, pellucida, nitidissima, testacei coloris ; sub- 
tùs lactea. Anfractus 5—6, planiusculi. Apertura 
magna, obliquè lunata, emarginata. Umbilicus patulus, 
sinu profundo. 
Long. 0.275.—Diam. 0.55. 
Helix lucida. Mont. Test. Brit. p. 425. t. 93. f: 4. 
Helix 
