Vol. 68.] THE MIDLAND AND SOUTH-EASTEEN COAL MEASURES. 321 



Phylloblatta (?) sp. (PI. XXXIII, figs. 3-5.) 



Portion of a blattoid wing- fragment, 5 millimetres long and 

 2-D mm. broad. 



The impression shows a portion of the subcostal and radial 

 region of a right tegmen. The outer margin is very gently 

 rounded, while the depth of the venous impressions indicates that 

 the wing was of a robust tj^pe. 



The subcostal area must have been broadly ovate in shape. The 

 course of the two outer rami only is shown, and these gradually 

 curve forward to the costal margin, the outer ramus reaching it at 

 a little above the estimated third of its length. 



The radius is a strong, much-branched vein arising in close 

 proximity to the subcosta, but diverging from it as it bends out- 

 wards towards the margin. Pive branches can be distinguished, 

 the two outermost only remaining single. The first gives off two 

 faint rami on its outer side, neither of which reaches the margin. 

 The second branch forks into two and then into four, while the 

 third branch forks once. The course pursued by the branches of 

 the radius is such that they must have occupied the greater portion 

 ©I the distal outer margin of the wing. It was not possible to 

 determine whether the main stem was continued into other 

 branches ending in the tip of the wing, but this was probably the 

 <iase. The interspaces between the veins are filled with a series 

 of straight closely-set cross-veins. 



The broad and shortened form which this wing must necessarily 

 have possessed, as determined by the characters of the radius, the 

 manner in which that vein branches, and the shape of the costal 

 area, is a character which places the wing-fragment in the family 

 Mylacridse. Generic and specific distinction is not possible. 



Horizon. — At 1028 feet in the Coal Measures, Kent Coalfield. 



Impression of a blattoid wing-fragment, 3 millimetres long 

 and 2-25 mm. wide. (PI. XXXIII, figs. 6 & 7.) 



The impression shows the course of three branches, the two outer 

 dividing by forking into two equal branches. In the case of the 

 longer branch, the division occurs some distance from the margin. 

 The shorter branch divides quite close to the margin. 



The margin of the wing-fragment is strongly curved, so much so 

 as to indicate clearly the tip of the wing. The branches must, 

 therefore, belong either to the radial or to the median vein. The 

 areas between the branch-veins are filled with a close meshwork, 

 n feature which is common to several genera. 



Genus and species indeterminable. 



Horizon. — At 2381-6 feet from the surface, in the Coal 

 Measures, Kent Coalfield. 



Phylloblatta (?) sp. (PI. XXXIII, figs. 8 & 9.) 



Impression of a portion of a blattoid wing, 6 millimetres long 

 and 3 mm. broad. The fragment forms more than a quarter of the 

 -whole wing, and represents the proximal outer portion of the wing, 

 including the subcostal and radial regions. 



