106 GUIDE TO THE FOSSIL INVERTEBRATE ANIMALS. 



Gallery 

 VIII. 



a b 

 Fig. 52. — Cockroaches of the Coal Measures, a, Etohlattina mazona from 

 Illinois, enlarged 2 diameters. (After Scudder.) 6, restoration of Pro- 

 gonohlattina helvetica from Switzerland. Natural size, (After Heer.) 



Fig. 53. — Wings of Neuropterous insects from the English Coal Measures, 

 a, Lithosialis Brongniarti ; b, Brodiea priscotincta, with colour-bands. 

 Natural size. (Table-case 20). 



