Xll 



EXPLANATION OF THE PLATES. 



Plate Page 



XXII «f P EMMATITES constipatus, sp. nov., and 



'\Eunicites Reidi^e, sp. nov. ; and 1 



XXIII f Pal^eacis, to illustrate Dr. G. J. Hinde's paper on those | 

 ' \ fossils J 



(GEOLOGICAL MAP OF THE NEIGHBOURHOOD OF DoLGELLY, 

 to illustrate Messrs. P. Lake and S. H. Reynolds's 

 paper on the Lingula-Flags and Igneous Rocks of that 

 District 511 



XXV I ® E0L0GICAL Sketch-map of the Neighbourhood of Car-->. 

 ' \ marthen ; and 



(Carmarthen trilobites, to illustrate Miss M. C. Crosfield } 523 

 and Miss E. G. Skeat's paper on the Geology of that 

 district J 



{Aucella volgensis and Aucella Keyserlingi, to illustrate 

 Prof. A. P. Pavlow's paper on the Classification of the 

 Strata between the Kimeridgian and the Aptian 542 



{Microscopic sections of Lavas and Ashes from the Kildare 

 Inlier, to illustrate Messrs. S. H. Reynolds and C. I. 

 Gardiner's paper on the above-mentioned Inlier 587 



Geological Sketch-map of portions of Idaho, Montana, 

 and Wyoming, showing in part the Distribution of the 

 XXIX. ■{ Volcanic Rocks, to illustrate Prof. J. P. Iddings's paper on 

 Extrusive and Intrusive Igneous Rocks as Products of 

 ^ Magmatic Differentiation 606 



{Seismical Maps of the British Isles, the Indtan Empire, 

 Africa, and the Lesser Antilles, to illustrate M. F. de 

 Montessus de Ballore's paper on Seismic Phenomena in 

 the British Empire 651 



{Geological Maps of North-western Europe and the Crag 

 District of Suffolk and Norfolk, to illustrate Mr. F. 

 W. Harmer's paper on the Pliocene Deposits of Holland, 

 etc 748 



