A PHTHOROBLATTINA EGGINTONI. 



101 



Specific Characters.- — Costal margin convex. Cubitus long, strap-shaped, and 

 extending almost the whole length of the outer margin. Radial sector with few 



c o o 



simple branches. Median vein forking three times, and ending in middle and 

 inner side of the wing-apex. Cubitus extending the whole length of the inner 

 margin, with no evident outer branches, and feeble forking. 



Description. — The specimen is contained in a small greyish-brown nodule, 

 48 mm. long and 35 mm. wide, and lies with the dorsal surface of the wings and 

 the impression of the pronotum on one half of the nodule, and the wing-impressions 

 and pronotum on the other half. The remains are in good condition, and show a 

 small portion of the head, the pronotum and mesonotum, almost the whole of the 

 left tegmen, and the basal two-thirds of the right tegmen, while a portion of 

 the left hind-wing is disclosed over that area from which the fragment of the 



Fig. 32. — Aphthoroblattina eggintoni,STp. nov.; diagram of venation of fore- wing-sand portion of left hind- 

 wing, twice natural size. — Middle Coal Measures (binds bel ween •' Brooch " and " Thick " coals) ; 

 Coseley, Staffordshire. W. Egginton's Collection, "no. 1." 



tegmen is missing. That both hind- wings are present is indicated by their 

 principal veins showing in feeble fashion through the tegmina. 



The head is small, not more than o mm. of its length being visible, and not all 

 of this would be seen were the front margin of the pronotum intact. The latter 

 has been broken away in the middle line, and allows a portion of the head to 

 become visible. The hinder part of the head is well rounded and narrowed, the 

 front being wide, and having a forward and downward slope. It is finely 

 tuberculated. A small aperture in the middle of the head may be due to a loss 

 of matrix. 



The pronotum is attached to that half of the nodule which contains the 

 wing-impressions, and the hinder border is still covered with the matrix. Its 

 whole contour cannot be seen, and only the inner surface is exposed. It is semi- 

 circular, with a well-defined margin, 12 mm. wide, and 8 mm. long from front to 



