50 FOSSIL INSECTS OF THE BRITISH COAL MEASURES. 



from the undoubted cubitus, and by reason of its two forward branches resembles 

 the cubital elements in front of it. Its wide separation from the second branch of 

 the cnbitns supports the view that it is the first anal vein. The undoubted anal 

 veins are two in number, undivided, and passing backwards very obliquely to the 

 wing-margin. More anal veins may have been present, but it is very doubtful. 

 The wing-surface is much wrinkled across both the length and breadth, and 

 traversed by numerous cross-nervures, which are most evident in the median area. 



Affinities. The Aving is typically Palaaodictyopteroid, and in the development 

 of the radius, radial sector, and cubitus, shows an affinity to Lithosialis brongniarti. 

 It differs markedly from that species, however, in the great length of the main 

 stems before divisions arise. 



Dr. Tillyard, to whom I have shown my enlarged drawings, is of opinion that 

 Prnrostia is allied to Pseudofouqnea rather than to the Lithomantidje. 



Family BREYERIIDJ;, Handlirsch. 

 1906. Handlirsch, Die Fossilen Insekten, p. 95. 



Wings markedly triangular, with broadened bases. Costa, subcosta and radius 

 brought closely together in the outer part of the wing, the median with few 

 divisions. Cubitus and anal veins directed almost straight inwards, at right 

 angles to the length of the wing. 



Genus BREYERIA, Borre. 



1875. Breyeria, Borre, Ann. Soc. Entom. Belg., vol. xviii, p. 40. 

 1908. StobMa, Handlirsch, Die Fossilen Insekten, p. 1348. 



Generic Characters. Wings two arid a half times as long as wide. Outer wing- 

 margin straight; apex curved inwards. Inner wing-margin strongly convex. 

 Costa marginal, subcosta parallel and joining the radius near the wing-apex. 

 Radius giving off the radial sector near the base of the wing, and reaching the 

 apex undivided. Radial sector subparallel to radius. Median boldly curved inwards 

 almost at a right angle. Cubitus less curved than the median. Anal veins few. 

 Interstitial neuration of two kinds, that of the intercostal and radial sector areas of 

 short straight nervures, and that of the remaining areas of irregular thin nervures 

 which tend to anastomose into a loose meshwork or reticulate arrangement. 



O 



Breyeria woodwardiana (Handlirsch). Text-figures 12, 13. 



1903. "Allied to Lithomantis carbonariw," Stobbs, Geol. Mag. [4], vol. x, p. 524. 

 1906. Palaeodictyopteron, sp., Handlirsch, Die Fossileu Insekten, p. 126, 



