:V2 FOSSIL INSECTS OF THE BTUTTSTT COAL MEASURES. 

 Genus HYPERMEGETHES, Handlirscli. 



I!""', Hi/i^riiifiirtlii'it, llMinllirsrli, I'ror. U.S. National Must-inn, vol. \\i\. |. r.7'J. 



Generic Characters. Costal border feebly convex, snbcosta mid radius close 

 together along tin- greater part of tlieir length. Cubitns composed of two. 

 possibly more, parallel ami simply forked brandies, divided near the point of 

 origin. Anal veins few ; interstitial nenration of tine, irregularly anastomosing 

 nervures. 



Hypermegeth.es northumbriae, Bolton. 1'late I. tig. I ; Text-figure :'>. 



U'l". Hypermegethes n<irtliinnlri:r. Bolion. Quart. .tom-n. (leol. Soc., vol. Ixxii. p. 55, pi. iv, figs. 2 



Mini :i, ;iinl woodcut in l( j xt. 



TI//H'. Portion of the basal half of a left wing, in counterpart; British 

 Museum (no. In. 1 s.'dl. 



FIG. rt. Hypermi gethes northumbrix, Bolton ; suggested outline of left wing, restoiv.1. shnwin 



preserved, slightly less than luitui-il size CVil Measures (sliale aliovc tin- ( 'IM\V I'.ial); Phoenix 

 Brickwiivks, Craw.-rook, ])urhain. Bvit. Mus. (no. In. 1S52-1'. 



Horizon iniiJ L<ii'<iHh/. (\)&] Measures (shale above the Crow Coal); Phoenix 

 Brickworks, Crawcrook, Din-ham. 



X/jfC///c < 'luirnrh'i'x. Costal area wide, and crossed by an irregular mesliwork 

 of small veins. Median united witli the radial sector basally, and giving off an 

 inner branch which unites with the eubitus. ('ubitus with a short stem Forking 

 into two equal and widely separated branches. Anal veins simple, and widely 

 spaced. 



Description. The fragment is little more than a third of the whole wing, and 

 its characters can only be determined with ditliculty. The two halves of the 

 nodule do not coincide, and the outline drawing of the wing is buili up Iroin 

 details supplied by both halves. The inner margin, anal aiea and base of the 

 wing have been lost, so that a little less than two-thirds of the outer portion ot 

 the basal half of the wing is present. 



The portion of wing remaining being <i;'> mm. long, with a depth ol ol mm. at 

 its widest purl, the whole \\ing must have had a length of about I'-'ii mm., or 



