PLATE VII. 



Tig. Paoe. 



Iff, Archimylacris hastata, Bolton ; greater part of left fore-wing. x 2f. 

 Base of Upper Coal Measures (Gellideg Level of Mynyddislwyn 

 Vein) ; near Maes-y-cwmmer, Monmouthshire. Mus. Pract. Geol., 

 no. 24501. 103. 



1 b. Ditto ; counterpart of left wing, x 2f. Mus. Pract. Geol., no. 24502. 103. 



2 Archimylacris woodwardi, Bolton; left fore-wing. x 3^. Base of 



Pennant Series (10 feet shale overlying the No. 2 Rhondda seam) ; 

 Clydach Vale, South Wales. Mr. D. Davies' Coll. 106. 



3 a. Archimylacris incisa, sp. now ; impression of the under surface of the 



pronotum, and of the remnants of the fore-wings. X 3. Middle 

 Coal Measures (binds between the " Brooch " and " Thick " Coals); 

 Coseley, nr. Dudley, Staffordshire. British Museum (Johnson 

 Coll.), no. I. 15900. 107. 



3 b. Ditto; counterpart. X 3. 107. 



4 a. Archimylacris obovath, Bolton; portion of left fore- wing. X 3. Upper 



Coal Measures (Gwernau Level of the Mynyddislwyn Vein); Maes-y- 

 cwmmer, Monmouthshire. Mus. Pract. Geol., no. 2450G. 109. 



4b. Ditto; impression — less incomplete than the broken wing, x 3. Mus. 



Pract. Geol., no. 24507. 109. 



5. Archimylacris, sp. indet. ; fragmentary fore-wing, showing the middle 



third only, the rest being concealed under a leaf of Cordmtes, the 

 latter bearing pits in which Spirorbis pvsillus (Martin) had 

 established themselves. Much enlarged. Base of Upper Coal 

 Measures (Gellideg Level of Mynyddislwyn Vein) ; near Maes-y- 

 cwmmer, Monmouthshire. Mus. Pract. Geol., no. 24503. 1 12. 



6. Archimylacris, sp. indet. ; impression of the basal portion of a left 



fore-wing, and of a broken pronotum. Much enlarged. Base of 

 Upper Coal Measures (Gellideg Level of Mynyddislwyn Vein) ; near 

 Maes-y-cwmmer, Monmouthshire. Mus. Pract. Geol., no. 24508. 113. 



