NOTES FROM THE WEST OF IRELAND. 181 
aspersa, H. nemoralis, H. virgata, and Hf. ericetorum swarming 
out of the cracks and crawling over the scanty herbage in 
countless numbers. We made the most of our opportunity, and 
worked assiduously in the teeming rain, collecting a number of 
fine A. nemoralis, and H. aspersa var. exalbida. The shells were 
largely immature, and we were reluctantly compelled to leave 
behind very many beautiful examples on this account. The /. 
nemoralis did not differ very greatly from the Ballyvaughan 
specimens in their principal characteristics, and this is not to be 
wondered at, for the Aran Islands are of the same formation as 
the Burren district of Co. Clare and at one time doubtless were 
connected with it. Some particulars of the specimens taken 
may be of interest. The  xemoralis were not nearly so large 
as specimens we had seen, taken in tormer-years by Dr. P. B. 
Mason and others, and this may be accounted for by the 
extreme dryness of the early part of the season, at a time when 
the principal growth of the shell takes place. Many of the im- 
mature shells were larger than the full-grown specimens collected, 
and gave promise of a much greater development in size under 
favourable conditions. Out of the 169 mature specimens of 
H. nemoralis collected, no fewer than 30 were the white-mouthed 
form, var. albolabiata. All of these were of the yellow ground 
color of var. /ibe//ula, most of them with the bands completely 
or partly coalesced —a very unusual band formula for this variety. 
We have no doubt this form has been mistaken by some previous 
writers, in their observations on the mollusca of the Aran 
Islands, for H. hortensis, a species which, so far as our observa- 
tions went, does not exist on Aranmore, and certainly all the 
white-mouthed specimens obtained by us were H. xemoralis. 
Of var. Ayalozonata there were four specimens; of var. voseo- 
sonata two ; of var. rubella thirty—all bandless ; of var. castanea 
seven, typical ; of var. coa/ita four; of var. voseolabiata five, of 
various bandings ; and of var. punctata four. The remainder 
were var. /ébe//ula, many wanting the two upper bands, but no 
fewer than fifty were bandless. ‘Two of the specimens exhibited 
