98 



THE PALEONTOLOGICAL DATA 



Fig. 90. — Campteroneura reticulata (After 

 Handlirsch). 



The last of the series of American fossil insect remains from the Lower 

 Upper Carboniferous is Eurythmopteryx antiqua (Fig. 92), from the Pratt 



Mines, near Birmingham, 

 Alabama. As in the pre- 

 ceding species, this wing 

 shows definite cross-veins. 

 The radial sector is typical 

 with the addition of one 

 accessory vein on vein Ro. 



The single representa- 

 tive of the Lower Upper 

 Carboniferous insects found 

 in the British Islands is 

 Pseudofouquea canihrensis (Fig. 93), from the Lower Coal Measures, Car- 

 diff, Wales. In this wing the radial sector is typical with the addition 

 of an accessory vein on vein Ro. 



There remains only a single Lower Upper Carboniferous insect to be 

 mentioned. This is the German Stygne Roemeri (Fig. 94), from Laurahiitte 



in Upper Silesia. In this species , , 



the radial sector is dichotomously 

 branched and bears many acces- 

 sory veins. A remarkable feature 

 of this wing is the presence of a 

 series of accessory veins extend- 

 ing from the radial sector into 

 cell Ri. 



This series of the oldest insect 

 remains confirms the conclusion, 

 drawn from a study of recent 

 insects, regarding the primitive 

 type of branching of the radial 



sector. That is the sector was typically four branched and the branch- 

 ing 'was dichotomous. In addition to the four principal branches there 



Fig. 91. — Bathytaptiis falcipennis (After 

 Handlirsch) . 



Fig. 92. — Eurythmopteryx antiqua (After Handlirsch). 



