BLATTOIDS INCERT.E SEDIS. 119 



BLATTOIDS INCERTiE SEDIS. 



Remains of Blattoids have been found at four horizons and in four localities in 

 the Kent Coalfield. They were obtained from small cores, the edges of which had 

 cut through the wings, and rendered them so fragmentary as to be useless for the 

 determination of genera or species. They serve, however, to indicate that the Kent 

 Coal Measures may eventually prove to be as rich in fossil insect-remains as the Coal 

 Measures of the Pas-de-Calais. The depths of the cores given with the original 

 description of these fossils were found afterwards to have been reckoned from a 

 private datum, while the depths now given have been corrected to Ordnance 

 datum. 



Phyloblatta (?), sp. Plate VIII, fig. 4. 



1912. Phylloblatta (?), sp., Bolton, Quart, Journ. Geol. Soc, vol. lxviii, p. 321, pi. xxxiii, figs. 3, 4, 5. 

 1915. Phylloblatta (?), sp., Bolton, Trans. Inst Min. Eng., vol. xlix, p. fcf>. 



Specimen. — Impression of a Blattoid wing, 5 mm. long and 2*5 mm. wide; 

 Museum of the Kent Coal Concessions Company, Dover. 



The impression is that of the middle part of the margin of a tegmen. This 

 may be a part of the outer margin, as I formerly supposed, but I now think it 

 more likely to belong to the inner margin, and to show branches of the median aud 

 cubitus veins. 



Horizon and Locality. — Shales at a depth of 1967 ft. in the Maydensole boring, 

 Kent Coalfield. 



Phyloblatta (?), sp. 



1912. Phylloblatta (?), sp., Bolton, Quart. Journ. Geol. Soc, vol. lxviii, p. 321, pi. xxxiii, figs. 8, 9. 

 1915. Phylloblatta (?)', sp., Bolton, Trans. Inst. Min. Eng., vol. xlix, p. 45. 



Specimen. — Impression of part of a Blattoid wing, 6 mm. long and 3 mm. wide; 

 Museum of the Kent Coal Concessions Company, Dover. 



The fragment appears to belong to the proximal part of the wing, and shows a 

 long vein giving off six branches. 



Lying more inward are the remains of a short forked vein. 



Horizon and Locality. — Shales at a depth of 954 feet in the Ripple boring, 

 Kent Coalfield. 



Blattoid Wind-Fragment. Plate VIII, fig. 5. 



1912. "Blattoid," Bolton, Quart, Journ. Geol. Soc, vol. lxviii, p. 321, pi. xxxiii, figs. 0, 7. 

 1915. "Blattoid,'' Bolton, Trans. Inst, Min. Eng., vol. xlix, p. 45. 



Specimen. — Impression of a wing-fragment 3 mm. long and 2*25 mm. wide; 

 Museum of the Kent Coal Concessions Company, Dover. 



