MALACOZOA. GASTEROPODA. PULMOBRANCHIATA. 83 



It varies in colour, being yellow, reddish, or whitish, some- 

 times without bands, sometimes with one, or any number up to 

 five ; the bands generally brown. When there is only one 

 band, it sometimes covers nearly the whole surface. 



Foot, when extended, oblong, rather pointed behind, margi- 

 nate, rugose-granulate above, pale-grey ; neck compressed, 

 granulate, purplish-grey, with a medial narrow, and two lateral 

 broad pale bands; head darker, its fore part declinate and con- 

 vex ; the Upper teritacula long, subulate, clavate, granulate, 

 dusky-grey, with the tip pale-grey, the eye black ; lower tenta- 

 cula short, but semilunar. Another individual, of which the 

 shell is similarly banded, has the neck and tentacula a little 

 darker ; while another has the tentacula and their sheaths 

 grey, and the colours of the head, neck and foot much paler. 

 In general, the animal is of a pale-grey colour ; the head and 

 neck purplish-grey above, the neck with a medial whitish line ; 

 the hind part of the foot white, or yellowish-white. Some in- 

 dividuals are much darker than others, being all over of a 

 purplish-grey tint. 



"Helicem hortensem speciem a nemorali diversam suadent 

 parvitas (ilia 0ninl adulta aetate hac semper minor) nitor testae 

 splendidus, ac labium in majori, sive //. nem. constanter fus- 

 cum, in minori, sive H. hortensi album. His accedit, quod 

 varietates nemoralis cum variet, hortensis nunquam copula 

 jungi vitse sint, etiamsi in eas hoc respectu plures annos inqui- 

 siverim." Muller. Helix nemoralis, so abundant in the south 

 of Scotland, I have never met with in our district. 



Very common in pastures along the coast, especially among 

 the sand-hills, in the shelter of furze, and on the grassy 

 slopes of cliffs, as well as by walls and on banks in the interior; 

 but not in the highland tracts. 



A. Helix hortensis fascidta. Common banded variety. 



B. Helix hertensis unicolor. Similar, but not banded. 

 C Helix hortensis arenicola. 



Shell subglobose, very thin, diaphanous, hyaline, with five 

 opaque white bands ; the epidermis thin, pale sulphur-yellow ; 

 the peristome thin, with an internal opaque white rib. 



Animal pellucid, yellowish^white, diaphanous ; with the foot 

 oblong, rounded before, rather pointed behind, granulated on 

 the sides ; the neck and head granulated ; the upper tentacula 

 very long, subulate, with a small knob, the lower small, but 

 similar. 



