20 



disclosed in a nodnle of Ironstone, one of the upper or 

 dorsal surface, the other of the under and ventral aspect, 

 each being as nearly perfect as it is possible to conceive. 

 Geological Magazine, Sept. 1871. The Coal Measures 

 seem to be the chief depositories of the Order Pseudo- 

 scorpions, and of the family of Scorpions proper, for neither 

 in the Oolite nor Lias have- any traces of either as yet been 

 met with. The Cm-culioides Prestvicii, figured in Buckland's 

 Bridgewater Treatise, formerly thought to be an Insect, 

 turns out to be one of the false Scorpions, and "Woodward 

 names it Eophiynxas Prestvicii, a new genus of Arachnida. 



The Myriapoda or Centipedes are represented by two or 

 more genera in our own Coal fields and elsewhere. Several 

 of these are figiu'ed and described by my friends Dr. Dawson 

 and Mr. Woodward in the Journal of the Geological Society 

 and in the Geological Magazine. 



A comparison of the Tabular list given below will shew 

 the range and orders of all the fossil Insects hitherto known 

 in the Secondary rocks in England. It will be seen that 

 these remains are few, limited, and fragmentary in all the 

 formations above the Purbecks in which they axe locally 

 abundant, (as they also are in the German Jura Kalk,) and 

 the Lias ; they are comparatively scarce in all the formations 

 below the Solenhofen limestones, with the exception of the 

 Stonesfield Slate, Lias, and perhaps the Coal Measures. 

 These observations only apply of course to what is at 

 present known about their distribution and numbers, for 

 future investigations may enlarge the list considerably, and 

 give us a much wider acquaintance with the Insect tribes 

 in past ages of the ancient world. 



