HYALINIA. 53 
Var. I. mortoni (Jeff. ). Spire depressed, sharply carinated. 
Var. II. dlderi (Gray). Smaller, dark brown. 
Var. III. wividula (Taylor). Greenish white. 
Sub-genus.—ZONITOIDES Lehmann. 
tO; He NITIDA (elossy) Afgiler, PI. V., f; 11} 1a: 
Rather solid, glossy, semi-transparent, clear chocolate brown, 
striated transversely, microscopically granulated ; whorls 5; spre raised, 
apex blunt; seture deep; mouth round; zzmbilicus narrow but 
deep. <A. 23mm. B. 64mm. 
It is found at the roots of grass, among moss and under 
stones in moist places, often with 4g. /evis, usually not 
very abundantly, but Mr. J. R. B. Masefield once found a 
large colony at Tenby. 
Young specimens may be mistaken for vadiatula, but 
under a lens that species is seen to be more regularly 
striated and glossy. ‘The most distinctive characteristic 
is perhaps the absence of white round the umbilicus and 
the clear chocolate brown colour of the entire shell. 
Both this and the next species possess a ‘ dart,’ which 
connects them closely with the Hedzces. 
It has a very wide distribution throughout the whole of 
the British Isles, and is even reported to exist in Shet- 
land. 
Var. albina (Mog.). ‘Transparent greenish. 
