90 Mr. R. Harkness on some new Footsteps in the 



EXPLANATION OF PLATE IV. 



Fig. 1. Thecidea Wetherellii, magnified. 



— 2. , ventral valve magnified. 



— 3. , dorsal valve magnified. 



— 4. Talpina ramosa, Hag. 



— 6. Figure magnified. 



— % a. Talpina solitaria, Hag. 



— 6 6. dendrina, Quenstedt. 



— 7. , figure magnified. 



— 8. Siliceous cast of Inoceramus, with Clionites Conybearei. 



— 8 a. Clionites Conybearei, cells magnified. 



— 9. Talpina solitaria and Clionites Conybearei in cavity of Belemnites 



mucronatus. 



— 10. Cells of Clionites in an Inoceramus shell. 



— 11. Clionites glomer at a, in cavity of Bel. mucronatus. 



— 12. Pearl-like body attached to the inner shell of Inoceramus. 



— 13. Pearl-like body unattached. 



— 14. Section of ditto, showing concentric arrangement. 



— 15. Section of a Belemnite, with cavities of Clionites. 



— 16. Peai-l-like body attached to a Gryphaea. 



X. — Notice of some new Footsteps in the Bunter Sandstone of 

 Dumfries-shire. By Robert Ha.rkni:ss, Esq. 



The quarry which has hitherto furnished the most numerous 

 and well-preserved impressions of footmarks from the Bunter 

 sandstone is Corncockle^ in the parish of Applegarth, Dumfries- 

 shire. Some few have also been obtained from the Craigs 

 quarry near Dumfries; and recently the quarries at Locher- 

 briggs, in the same neighbourhood, have afforded tracks of ani- 

 mals. To these localities there may now be added the quarry of 

 Green Mill, in the parish of Caerlaverock, which promises to 

 rival Corncockle both in the number and perfection of its foot- 

 steps. The nature of the sandstone in these different localities 

 is similar, consisting of strata, made up of laminae of brownish 

 and red-coloured sand, regularly bedded, dipping in the same 

 direction and at nearly the same angle ; the only variation being 

 at the Craigs quarry, where the stone is of a coarser nature than 

 at the other quarries. 



With regard to the impressions which have been obtained from 

 Corncockle, one of them is figured in Buckland^s ' Bridgewater 

 Treatise,' and referred to a Chelonian reptile ; and others are now 

 being figured and described by Sir William Jardine in his new 

 work ' The Ichnology of Annandale,' a publication in which the 

 footprints are illustrated by coloured lithographs of the size of 

 the originals, and which will form a valuable addition to our 

 knowledge of the Triassic fauna, and be the first work devoted 

 exclusively to Ichnology published in this country. The footsteps 



