^DCEOPHASMA ANGLICA. 79 



1906. jEdoeophasma anglich, Handlirsch, Die Fossilen Insekten, p. 12.5, pi. xiii, fig. 4. 

 L916. JEdoewphasma anglica, Bolton, Quart. Journ. Geo! Soc, vol. lxxii, p. 43, pis. iii, iv, and 

 text-figure. 



Type. — -Greater part of a left wing in an ironstone nodule ; Liverpool Museum 

 (presented by Major Chambers in 1858). 



Horizon ami Locality. — Middle Coal Measures; South Lancashire (locality 

 unknown, but the nodule so similar to those derived from the Ravenhead Railway 

 Cutting that it may be from that section). 



Specific Characters. — As generic characters. 



Description. — The specimen was partly described and named by Scudder in 1885, 

 and re-examined and figured by the present writer in 1910. 



The wing lies in counterpart in a fine-grained ironstone nodule, and its total 

 length as now exposed is 87 mm., its greatest breadth (across the middle) 40 mm. 

 When whole, the wing was probably 100 mm. long. 



Fig. 24. — JEdieoplursma anglica, Scudder: restoration of whole wing, showing the general character of 

 the venation, natural size. — Middle Coal Measures ; South Lancashire. Liverpool Museum. 



The outer or costal margin is gently convex. The subcosta is a broad flat 

 vein, gradually diminishing in width towards the wing-apex, which it just fails 

 to reach. 



The radius is an even broader vein than the subcosta, is also flattened in its 

 basal third, and reaches the outer angle of the wing-tip, keeping parallel with 

 the subcosta. 



The median vein divides low down into two equal branches, the outer giving 

 off four inwardly directed twigs. The first of these remains undivided ; the second 

 forks twice, and the outer and inner divisions of the second bifurcation again 

 divide, so that the vein ends on the apical margin in six divisions. The remaining 

 two branches are undivided. The divisions of the outer branch of the median 

 occupy the greater part of the wing-apex. 



The inner branch of the median does not divide until it has reached the apical 

 fourth of the wing, where it gives off four twigs which pass inwards to the 

 junction of the inner margin with the apex. Only the first of these twigs forks. 



The cubitus has the same broad flattened basal portion which is so character- 

 istic of the veins we have already dealt with. The main stem lies somewhat near 



