100 PUPIDA. 
suture remarkably deep; zouth semi-oval, outer margin constricted > 
teeth 5—6 (2 or 3 on dody, 1 or 2 on columella, 2 inside outer lip); 
umbilicus small. A. 1mm. B. Imm. 
This pretty little shell though local is found in many 
parts of the British Isles in moist situations at the roots 
of grass and under stones. Its strong striations, almost 
amounting to ribs, serve to distinguish it from any of 
the previously mentioned species, though in all cases the 
denticles should be carefully noted. 
é 
B. SINISTRAL. 
Sub-genus.—VERTILLA Moguin-Tandon. 
Ga WaePUSELLN (zienie)' Muller. Pl. 1V., £09. 
Fusiform, glossy, thin, horn-colour ; whor/s 43; spive more tapering 
than most members of the genus; very slightly striated in line of 
growth ; south semi-oval, constricted in the outer margin which is 
rather thick ; Zeeth 6—7, (2 on body, 2 0n columella, 2 or 3 inside outer 
iip).- A. igmm. B. 1gmm. 
This species is found very locally in England, chiefly 
in the north. It is recorded for two localities in the 
south west of Scotland; not for Wales. I found it sparsely 
among the sand hills at the mouth of the river Bann, and 
it has been found near Bundoran, Dublin and in Donegal. 
It is said to frequent similar situations to the others. 
Var. I. allina (Taylor). White. 
Var. II. témida ( Westl.). Smaller, more ventricose. 
