97 



Coleoptera ... 12 species. 



Hemiptera ... 1 ,, 



Hymenoptera ... ... ... 2 ,, 



Jjepkloptera 1 ,, 



Diptera ... .. 5 ,, 



21 



The sub.5equent investigations of Prof. Heer, Dr. Hagen, and 

 Herren Carl von Heyden and Lucas von Hsyden have raised the 

 number of species from Siebengeberge to one hundred and eighty, 

 viz : — 



Coleoptera 



Orthoptera 



Xeuroptera 



Hyineuoptera 



Lepidoptera 



Hemiptera 



Diptera 



It will be noticed that only two Lepidopterous insects are 

 enumerated from this locality. One of them is a butterfly 

 described by Carl Von Heyden as Vanessa Vetula. Of this fossil 

 Mr. E. Scudder observes, " Th? single fossil represented by Vou 

 Heyden, under the name of Vanessa Vetula, is preserved on a 

 greasy, dark brown, thin, and exceedingly fragile sheet of broAvu 

 coal, and is likely to become so affected by weathering as to be 

 almost or quite undistinguishable in the course of time." JVIi. 

 Scudder further observes that Vanessa Vetula is " the only butterfly 

 yet found from the horizon of the Aquitanian or Lower Miocene 

 and that it is closely related to TJuinaos, a genus belonging to the 

 North Temperate Zones of both Hemispheres. The genera ad- 

 jacent to TJianaos are said to be purely American, although tropical 

 or sub-tropical, and therefore this sj)ecies looks towards sub- 

 trojiical North America for its relatives of the present day. 



In the 10th vol. of ^Meyer and Bunker's Paleontographica 

 (1862), thirty-one further species of insects are described from 

 the lignites or broAvn coal of the Rhine and the Rhone, viz : — 



