262 PROCEEDINGS OF THE 



Neviatiis p.mdiceps, Thomson Hymen. Scand., i., 92, 14, — taken 

 in Scotland with the next two species, by Dr Sharp, the well 

 known Coleopterist. It will probably prove to be merely a 

 variety of N. riificornis, 01. = iV. cqipencUcuIahis and N. fraxini, 

 Htg. N. alUpennis (King.), Hartig, Blatt. und Holzwespen, 

 196, 22; Thomson, Hymen, Scand., i., 88, 8. N. hyperhoreus, 

 Tliomson, I.e., 127, 54. N. ZeUerstedfi, Dahlbom, Clavis, fig. 5, 

 Thomson, I.e., 147, 7S = N'.'miniatus, Hartig, I.e., 189, 12, — 

 taken at Braemar, by Dr Buchanan White. Poecilosoma guttatum, 

 Thomson, /. c, 231, 5, and P. excisum, Thomson, /. c, 233, 8, — 

 the former taken by Mr J. E. Fletcher, at Worcester, and the 

 latter in various parts of Scotland. 



There were also shown specimens of a new species, TV. MarshalH, 

 Cameron, obtained in the island of Corsica by the Rev. T. A. 

 Marshall, F.L.S., after whom Mr Cameron had much pleasure in 

 naming it. There was also exhibited specimens of the recently- 

 described Eriocampa testaceipes, Cam., from the neighbourhood of 

 Beauly, and a minute hymenopterous insect Meraponis graminicola, 

 Walker, which has its wings very imperfectly developed. It 

 was found near a barn in Fossil Road, in the flower of chickweed. 

 Notwithstanding its minuteness, it is a useful friend to the farmer, 

 as it destroys the larva of the weevil (Calandra), which is so 

 injurious to stored corn. 



Mr John Young, F.G.S., exhibited from his own collection and 

 that of Mr James Coutts, some fine large slabs of encrinital 

 limestone, from Trearne Quarry, near Beith, Ayrshire, and 

 remarked that nowhere in the West of Scotland had he seen 

 such an assemblage of large crinoids as are to be met with in this 

 particular bed of limestone, wliich at present is being extensively 

 worked for the ironstone smelting in the furnaces of that district. 

 The crinoids belong to the genera Poteriocrinus, Actinocrinus, Platy- 

 crinus, and Cyathocrinus. Some of these must liave attained a large 

 size, portions of the columns being met with on the weathered 

 surface of the limestone that measure three and a-quarter inches 

 in circumference, and from two to three feet in length. ^Complete 

 heads of the crinoids, and fragments of the cup or up^^er portion 

 of the animal, to which the arms were attached, are occasionally 

 found ; but the instances are rare. The encrinal limestone is 

 several feet in thickness, and is almost exclusively made up of the 

 remains of large crinoids. One tract has been finely glaciated, or 



