236 THE ZOOLOGIST. 
included a nidamental mass of L. peregra (or even a few detached eggs of 
this species, which would be easily overlooked) among the food introduced. 
And if L. involuta is merely a variety of L. peregra, then I should be 
inclined to suppose that reversions to ancestral conditions would be found 
in the Lough. It would be interesting to know whether L. involuta differs 
in its internal anatomy from L. peregra, for this would settle at once their 
specific distinctness or the reverse, and if I could obtain any live specimens 
of the former I would be willing to examine them in this relation; the fact 
that the contour, &c., of their bodies, when externally examined, are alike, 
experience has taught me to regard as of very little weight for diagnostic 
purposes. So far, taking into account what I have stated above, with the 
almost alpine distribution of L. involuta and the differences in the shell 
between it and L. peregra, I must still maintain the opinion I have long held 
of the specific distinctness of L. involuta from L. peregra.—J. W. WILLIAMS 
(Mitton, Stourport, Worcestershire). 
Testacella haliotidea (var. scutulum) in Renfrewshire.—More than 
six years ago I requested a gardener of my acquaintance to pick up for the 
Paisley Free Museum as many varieties of slugs as he could find. He 
promised to do so, and it was not long before he gave me several, among 
which was one of Testacella haliotidea, which I recognised from the figures 
in Jeffrey’s, Forbes and Hanley’s, and Dr. Gray’s works. I desired him 
to procure for me, if possible, a few more. Ina short time I had twelve 
from him. These I kept for some months alive, but as we were busy 
getting up a large addition to our Museum, they were neglected and died, 
but the shells were saved for the Museum. The throng being over and 
the place well filled, I desired to procure specimens to preserve in spirits ; 
for this purpose, in January, 1889, I spoke to another gardener, and showed 
him figures of the slugs. Soon he sent me sixteen fine specimens ; these 
Thad the pleasure of exhibiting alive at one of our monthly Natural History 
meetings. I have preserved in spirits a few of the most marked specimens, 
as well as their eggs; and, thinking that I might again lose the species, 
I have allowed the remainder to get loose in a garden near at hand.— 
Morris Youne (Curator, Paisley Free Museum). 
CRUSTACEA. 
Athanas nitescens in Ireland.—I do not think that this pretty little 
crustacean, so like a miniature lobster, has yet been recorded as Irish. 
In 1869, when collecting for the Royal Dublin Society, in the West of 
Ireland, I captured this rare species, in a rock-pool, on the small island of 
Magdara, which is noted also for a very interesting old chapel ruin. It lies 
a short distance to the south of Roundstone, Connemara,—A, G. More 
(74, Leinster Road, Dublin). 

