XU EXPLANATION OF THE PLATES. 



Plate Page 



{LiTHOPHYSES IN THE ObSIDIAN OP THE ROCCHE RoSSE, LiPARI, to 

 illustrate Prof. G. A. J. Cole and Mr, G. W. Butler's paper on 

 that subject 438 



XIII. / Stephanoceras, to illustrate Mr. S. S. Buckman's paper on the 



XIV. [ M.or-ph(Aog^ oi ^ Stephanoceras [zigzag 447 



YY / MicRozoA FROM THE Phosphatic Chalk OP Taplow, to illustrate 

 ' [ Mr. F. Chapman's paper on those fossils 514 



XVI. f MuRCHisoNiA, to illustrate Miss Donald's paper on some New 

 XVII. \ and Little-known Species of Carboniferous Murchisonia 562 



yyjjj / Mesosaurus, to illustrate Prof. H. G. Seeley's paper on the Meso- 



■ I sauria of South Africa 586 



COEEIGENDA. 



Page 128, line 4 [text] from hottom, for " south" read " north." 



Page 505, line 2 [text] from bottom, for " points 3 to 6 " read " points 4 to 6; 



