N 159 



ing, Northamptonshire, and near Stamford, in Linnolnshire. Tf. ia 

 described by Lyell as " a slightly oolitic shelly limestone, forming 

 large lenticular masses, embeded in sand only six feet thick, but 

 very rich in organic remains." Mr. Brodie says the (Stonesfield) 

 slate beds are largely developed in the north east of Gloucester- 

 shire, and have been traced from Wooton-under-edge to the neigh- 

 bourhood of Burford. From thence they may be followed in a 

 more northerly direction, and are well exhibited near Bourton on 

 the Water, Upper Slaughter, Stow-on-the-Wold ; and on the west 

 at Eyeford and Maunton to their farthest limit in this direction 

 at Sevenhampton, six miles east of Cheltenham. The remains of 

 insects in this formation appear to be almost confined to a few 

 families of Coleoptera, and they are generally in a very fragmentary 

 condition, and consequently most difficult to determine. In the 

 second volume of the "Geological Proceedings," Dr. Bucklandhas 

 described the wing of a large Nem-ojJierous insect from the 

 Stonesfield slate, which has been named Hemerobioides Giganteus. 

 In the list at the end of Mr. Brodie's pajier on "The Correlation and 

 Distribution of Fossil Insects "' before mentioned, another specimen 

 of a Neuropterous insect is mentioned (Libellula JVestwoodii) besides 

 two large wings, referred to the LibelluUe, wliich were found at 

 Eyeford on the Cotswolds by Mr. Brodie. The remains of 

 Coleoptera from this slate have been refen-ed by Brodie and West- 

 wood to some seven families, including Buprestidce, Curculionidce, 

 Coccinellido;, Prionndoe, Blapsidw, and Pimeliida'. By far the most 

 interesting insect fossil from the Stonefield state is the wing of a 

 large insect, which Mr. Butler, Professor Westwood, and Mr, 

 Bates believe to be Lepidoptermis. In the proceedings of the 

 Entomological Society of London, for 1872, we find the 

 following notice of its exhibition at a meeting of that Society. 

 " Mr. Butler exhibited a remarkably perfect impression of the 

 wing of a fossil butterfly in the Stonesfield slate. It appeared to 

 be most nearly allied to the now existing South American genus 

 Caligo. Mr. Butler subsequently named the species to which he 

 referred this fossil Falceontina Oolitica, and described and figured 



