Freshwater Mollusca of Ireland. 203 
deep as in adult individuals. Var. a. f. 6. Férus., is not more 
abundant here than the orange-footed one, which I have never suc- 
ceeded in finding at Killereran, where the variety is common in 
violet beds. The following from Férussac agrees curiously with 
my habitat: ‘‘ Elle se cache le jour sous les tiges de violettes de 
fraisiers et des autres plantes touffues.”” Mr. Alder remarks of the 
variety, “‘ The variety only, if such it be, has yet been noticed in 
this country.” I have never discovered even the rudiment of a shell 
in any of them. 
N.B. I have before me at present an Arion, found along with 
A. hortensis, var. 3. Pfeiff. The only character it possesses in 
common with it, is in the position of a yellow-coloured fascia run- 
ning round the body, which is of a dusky brown, the sides greenish- 
yellow, the fascia becoming indistinct on the shield. It differs 
materially in colour from any variety of the A. ater I have met 
with ; and what might characterize it as belonging to this species, 
is the shape and colour of the tentacles and head, the former being 
much more elongated than in JA. hortensis, and of a shining black 
colour. The edge or side of the foot is likewise similar to A. ater, 
being greenish-yellow, marked with the peculiar transverse black 
lines. Its mucus is yellow-coloured, whereas that of A. ater is 
whitish, or colourless. Since writing the above, I have obtained a 
second specimen, similar in every respect to the former, except the 
fascia, which is not so distinct. 
Limar maximus. 
L. antiquorum, Férus., t. 4. 
La Bergerie. Killereran and Monivea, county Galway. I have 
taken in each locality mentioned, one of the three varieties of Fé- 
russac, t. 4. Fig. 1. var 8. (var. a. Drap.), among violets, Kaillere- 
ran; his figure is good, ‘‘ sans tache distinctes,” &c. Fig. 7. var. v. 
Férus., is the La B. variety. Fig. 8. var. 2. Férus., closely resem- 
bles {specimens taken in Monivea churchyard, beautifully and di- 
stinctly spotted, the ground colour not so light as in Férussac’s 
figure*. 
Limaz agrestis. 
Limas agreste, Férus., t. 5. f. 7—8. 
L, filans, Young, var. v. Fér. 
Queen’s county, and county Galway. Common, of all shades and 
degrees of colour and markings, from the pale yellowish-white of 
L. filans to the darkest variety of reddish-brown. L. filans is equally 
abundant. Yesterday, July 21st, I had the gratification of seeing 
them repeatedly let themselves drop down to the table from the lid 
* I have recently met with a very remarkable variety of this species in 
the Spire hill, Queen’s county, and which I do not find described ; it is as 
follows :—The entire animal of a deep shining black, with the exception of 
the keel and central band of the foot, which are white. A casual glance at 
this variety would scarcely suffice to recognise it; but the shape of the ani- 
mal, the shell, and the keel, at once determine it as Z. maximus. In one 
a there were a few indistinct blotches of a lighter colour on the 
sides, 
