Freshwater Mollusca of Ireland. 203 



deep as in adult individuals. Var. a. f. 6. F6rus., 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 Ferussac 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 Avion, 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 A. 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. 



Limax maximus. 



L. antiquorum, Ferus., t. 4. 

 La Bergerie. Killereran and Monivea, county Gal way. I have 

 taken in each locality mentioned, one of the three varieties of Fe- 

 russac, t. 4. Fig. 1. var /3. (var. a. Drap.), among violets, Killere- 

 ran ; his figure is good, " sans tache distinctes," &c. Fig. 7. var. v. 

 Ferus., is the La B. variety. Fig. 8. var. £. F£rus„ closely resem- 

 bles ^specimens taken in Monivea churchyard, beautifully and di- 

 stinctly spotted, the ground colour not so light as in Ferussac's 

 figure*. 



Limax agrestis. 



Limas agreste, Ferus., t. 5. f. 7 — 8. 

 L. filans, Young, var. v. FeV. 

 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 L. maximus. In one 

 individual there were a few indistinct blotches of a lighter colour on the 

 sides. 



