100 FOSSIL INSECTS OF THE BRITISH COAL MEASURES. 



attached nearer the middle line, and almost on the upper surface. All four wings 

 are present, the tegmen of the right side 'being perfect, while that on the left has 

 lost a portion of the inner part of the apex. The right tegmen is 25 mm. long, and 

 12mm. wide at its broadest part. 



The costal margin is broadly arcuate, and merges into a well-rounded apex. 

 The subcosta is feeble, and gives off 7 10 very oblique branches, each breaking up 

 into numerous twigs before reaching the margin. The intercostal area is wide and 

 strap-shaped, and occupies the greater part of the outer margin. 



The radius is well separated from the subcosta at its base, and diverges a little 

 from it along its course. It gives off the radial sector before the middle of the 

 wing is reached, and then passes forward undivided until near the end of the sub- 

 costa, where it gives off four or more short oblique branches forward. 



The radial sector diverges strongly from the radius", and, like the latter, remains 

 undivided for the greater part of its length. In the last third it gives off two, 

 possibly three, outer twigs, which fork before reaching the margin. The inter- 

 radial area at the point where the first branch arises is very wide. 



The median arises close to the radius, but soon bends strongly towards the 

 inner side of the apex. It gives off three outer parallel branches, the first of 

 which forks. 



The cubitus is a powerful and large vein, well apart from the median at its 

 origin, and passing above the middle of the wing in its proximal third, beyond 

 which it curves inwards to the end of the inner margin. It gives off six simple 

 branches and ends in a feeble fork, while two strong' branches arise on the outer 

 side and pass to the apex. 



The anal area is large, occupying one-third of the margin, and containing six 

 anal veins, the first, second and third forking. 



The inner margin is almost straight. The interstitial neuration consists of 

 numerous raised cross-nervures, best seen in the anal and cubital areas. In the 

 radial and median areas the cross-nervures unite laterally and occasionally fork. 



Portions of the hind-wings are present, but only the distal branching of the 

 radial sector, median and cubitus is shown beyond the broken end of the left 

 tegmen. The course of the radius and median is traceable across the surface of 

 the tegmen of each side. 



The wing-membrane is so thin as to be scarcely discernible. 



Aphthoroblattina eggintoni, sp. nov. Plate VI, fig. ; Text-figure 32. 



Type. Pronotum, tegmina and portions of hind-wings lying on the surfaces of 

 a split ironstone nodule; " No. 1 " in the Collection of Mr. W. Egginton. 



Horizon and Locality. Middle Coal Measures (binds between the " Brooch " 

 and " Thick " coals) ; Coseley, near Dudley, Staffs. 



