﻿44 



MR. H. BOLTON ON SOME INSECTS [vol. lxxii, 



The median divides low down near the base into two equal 

 branches, the outer of which gives off four successive twigs. The 

 first of these twigs (regarded by Handlirsch as the radial sector) 

 arises before the branch reaches the middle of the wing, and 

 remains undivided throughout the whole of its course to the inner 

 angle of the tip of the wing. The second twig divides twice, the 

 outer and inner twigs of the second bifurcation dividing again, so 

 that the ultimate twigs reaching the margin are six in number ; the 

 remaining hranches, which are three in number, remain simple and 

 undivided. The anterior branch of the median occupies the greater 

 part of the wing-tip, and ends upon it in seven twigs. 



The inner branch of the median is simpler in character than the 

 outer, and does not divide until well past the middle of the wing. 



Fig. 1. — Restoration of wing of iEdoeophasma anglica Scudder, 

 showing the general character of the intercalary venation. 

 (Natural size.) 



It then gives off four twigs, which pass outwards to the junction 

 of the inner wing-margin with the apex. The first of the twigs 

 forks before reaching the margin, and consecmently the inner 

 branch of the median has six ultimate twigs. 



The cubitus passes out from the base of the wing parallel to the 

 main stem of the median and to its inner branch for the greater 

 part of its length. It sends off at a wide angle, at the middle of 

 the wing, a strongly-curved branch, which bends first inwards and 

 then outwards towards the apex, breaking up into five twigs before 

 reaching the inner margin. The second of these twigs forks. A 

 second branch comes off a little farther out, and also at a wide 

 angle. This remains undivided along its whole length. The main 

 stem of the median runs out to the margin, forming a small fork 

 immediately in front of it. The cubitus ends in the inner wing- 

 margin in six twigs. 



The next two veins were probably united a little way out from 

 the base, and their direction is such that the single stem from 

 which they arose may have been given off at the base of the 

 cubitus. If this were the case, the two veins would form an inner 



