290 PROCEEDINGS OF THE 



advantages of this method were that the objects retained their form 

 without any distortion, and every detail of structure could be made 

 out, while the colour was not any more changed than would have 

 been the case had the objects been kept in spirit. If not immersed 

 too long in the acid, the larvae, &c, were quite flexible, and their 

 limbs could be moved without breaking. The method, in fact, 

 appeared to him to possess all the advantages of the old plan of 

 keeping the larvae in spirit, without any of its disadvantages, while 

 it also seemed to be quite as good as the methods of preserving the 

 larvae by inflation or roasting over gas. 



Mr. Thomas Scott, Corresponding Member, exhibited some species 

 of Land Shells from the Greenock district, on which he made the 

 following remarks : — 



The species of Land Shells now exhibited were collected during 

 various botanical rambles in the neighbourhood of Greenock and at 

 Skelmorlie. Besides these species a number of more common forms 

 are also found ; but, as I intend ere long to prepare a full list of the 

 Land Shells known to occur in the district around Greenock, I 

 have made no reference to them at present. 



Limax flavus, L. I have as yet found only one or two specimens 



in the neighbourhood of Greenock. 

 L. marginatus, Mull. Common in gardens in the district. 

 L. maximus, L. Frequent. In handling half-grown specimens 

 I have observed that when irritated they lifted repeatedly 

 the edges of the mantle. This operation imparts a very 

 peculiar appearance to the slug.* 

 Zonites radiatulus, Alder. This pretty species occurs at the 



Cloch and in one or two other places in the district. 

 Z. excavatus, Bean. Cloch, Shielhill Glen, and other places. 

 Helix lamellata, Jeff. One specimen of this species was obtained 



at the Cloch by my son, Mr. Andrew Scott. 

 H. aeuleata, Mull. Cloch. This Helix, though small, appears 



somewhat formidable on account of its spiny epidermis. 

 H. rufescens, Penn. Plentiful near Greenock. 

 H. sericea, Mull. Tower Hill, Gourock; not uncommon at 



Skelmorlie. 

 H. fusca, Mont. Cloch, Shielhill Glen, and other places. 

 H. caperata, Mont., with var. major. At Skelmorlie, which 

 appears to be the nearest locality to Greenock. 



* I find that Dr. Jeffreys incidentally refers to this habit- Brit. Conch., i. 138. 





