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FROM THE BRITISH COAL MEASURES. 



close approximation of the sub-costa to the radius along its whole 

 length, in the outer median vein being fused for a portion of its 

 length with the radius, and in clistally uniting with and crossing 

 the outer branch of the cubitus. These diagnostic features are 

 sufficiently important to justify the creation of a new species, 

 to which I give the name of Hyjpermeg ethes northumbriee. 



Type-specimen in the possession of Mr. William Eltringham. 



Locality. — Phoenix Brick-works, Crawcrook (Durham). 



Horizon. — Shale above Crow Coal. 



PSEUDOEOUQUEA CAMBRENSIS (Allen). (PI. IV, figs. 4 & 5.) 



1901. Fouquea canibrensis H. A. Allen, Geol. Mag. dec. 4, vol. viii, p. 65, text- 

 fig, on p. 66. 



1906. Pseudofouquea canibrensis (Allen) Handlirsch, ' Die Fossilen Insetten * 

 p. 125 & pi. xiii, fig. 5. 



This is a broken left fore-wing, of which the two parts are 



preserved upon the surface of two small fragments of black shale. 



One fragment, bearing the 



Fig. 6. — Restoration of the left basal part of the wing, is in 



wing of Pseudofouquea cam- the Museum of Pactical Geo- 



brensis (Allen). l°g3 T ; "the other, containing 



the outer 28 mm. of the 



wing, is in the Welsh National 



Museum, Cardiff. 



Allen referred the wing to 



Charles Brongniart's , genus 



Fouquea, comparing it with 



r , T , , . F. lacroixi Brongrniart, but 



.Natural size. J , . . . . . ° . ' 



drawing attention to the 



marked difference of the cubitus in the two species and to the 



greater number of twigs into which the main veins divided in 



P. canibrensis. Handlirsch repeats Allen's figure, and places the 



species in a new genus, Pseudofouquea. 



The total length of the wing remaining is 32 mm., so that 

 9 mm. have been lost from the tip of the wing in the Geological 

 Survey specimen. The total length is given by Allen as 41 mm. 

 The greatest breadth is 15 mm. 



In the costal area are very faint traces of a feeble venation of 

 cross-veins, which bend obliquely outwards. In the area between 

 the sub-costa and the radius the veins in the proximal part are 

 transverse, becoming irregular in direction farther out. The rest 

 of the intercalary venation is now so feebly marked as to be 

 indistinguishable, except between the base of the anal vein and 

 the main stem of the cubitus, where it is irregularly reticulate. 

 This is not shown in Allen's figure. 



The costa is fairly convex, most conspicuously so in the 

 proximal half. 



The sub-costa is somewhat widely separated from the costal 

 proximally, and gradually approaches it along its outward course. 

 As the costal border dips backwards about the middle of its length, 



