34 FOSSIL INSECTS OF THE BRITISH COAL MEASURES. 



radial sector is reached, and then forking, the inner twig uniting with and crossing 

 the cubitus. 



The cubitns has a short, stont basal stem, forking into two equal and somewhat 

 widely separated branches, the outer uniting with the inner branch of the median. 

 The inner branch is forked just before the broken edge of the wing is reached. 

 Nearer the inner margin of the wing are traces of two other veins. The first has 

 its basal portion missing, and follows a course parallel with the inner branch of 

 the cubitus. It is strongly forked. The remaining vein is represented by three 

 detached fragments. If Handlirsch's interpretation of the wing of H. sehucherti 

 is followed, we should regard both these veins as anal. I am, however, of opinion 

 that, while the innermost fragmentary vein may be anal, the forked vein by its 

 position, its forked character and stoutness, must be regarded as a portion of the 

 cubitus. I am likewise of opinion that the first, and possibly the second, of the 

 veins marked as anal in Handlirsch's figure of H. schncherti, ought also to be 

 classed as cubital. Both in H. schucherti, and in this specimen, the anal area 

 would have an enormous development and occupy most of the wing-margin, if the 

 veins alluded to were wholly anal in character. I feel sure that, if the vein nearest 

 the cubital had been better preserved, it would be found branching off from the 

 cubitus. 



The interstitial neuration is typically that of Hypermegethes. The intercostal 

 area is filled with an irregular meshwork of fine nervures, with a tendency on the 

 outer and inner sides to a transverse arrangement. Between the median and the 

 cubital veins the interstitial neuration consists of short, straight and transverse 

 nervures, and feeble traces of similar nervures can be seen in the median area. 

 The cubital area is filled with a meshed neuration, larger and more regular than 

 that of the intercostal area, and this seems to continue into the anal area. 



Family CRYPTOVENIID^;, Bolton. 

 1912. Bolton, Quart. Journ. Geol. Soc., vol. Ixviii, p. 315. 



Wings short and broad. Apex rounded, costal vein marginal ; subcosta feeble, 

 and extending to near apex. Radius simple ; radial sector and median with few 

 divisions ; cubitus with two main branches. 



Among the insect-remains discovered by the late Dr. L. Moysey at the Shipley 

 Manor Claypit is a small wing, 16 mm. long, unlike any previously known. It 

 is typically Palaeodictyopterous, and agrees remarkably well with Dr. Handlirsch's 

 type-figure ('Mitth. Geol. Gesell. Wien,' vol. iii, 1910, p. 505, fig. 1). It differs from 

 that form in the greater division of the cubitus, which ends in five twigs instead of 

 three. The greatest depth of the wing was also, in all probability, nearer the base 

 than in his figure. With the genus Athymodictya, Handlirsch (< Amer. Journ. Sci.' 



