HELIX, T7 
(Cynoglossum officinale), and much resembles in colour 
and position the clusters of burrs upon that plant, but 
its colour there depends apparently on the absence of 
chalk. 
It is much smaller and smoother than caxtrana. 
Mrs. Fitzgerald, of Folkestone, who has collected this 
species for years and knows the district thoroughly, in- 
forms me that it shares with A. g/utinosa the peculiarity 
of disappearing and reappearing at intervals. 
Var. I. minor (Moqg.). Diam. to mm. 
Var. Il. dactéscens (Picard)=v. albida (Jenner). White. 
Var. III. ledicoloma (Stabile), Shell entirely white or 
with white peristome or rib. 
Var. IV. rifildbris (Jeff). Lip red instead of white. 
16. H. RUFESCENS (reddish), Pennant PI. III., f. 5. 
Sub-conic, depressed, thick, semi-opaque, dull-brown or rufous, 
periphery usually bluntly keeled ; whor/s 6-7 ; sfz7e short and blunt; 
mouth semi-lunar with white internal rib; zzdz7/cus narrow but deep. 
A. 74mm. _ B. 125mm. 
This species has an extensive range throughout Great 
Britain, as far north as Stirling. It is often very abund- 
ant in the south of England, but it is very local in some 
parts of the country. It has a wide range in Ireland, 
but is rare in the north-east district. 
The white form is exceedingly common in most places 
where the type is found. It is a variable shell, and 
series from different localities are interesting. 
