224 CARBONIFEROUS INSECTS OF GREAT BRITAIN. 



EXPLANATION OF PLATE XYII. 



Fig. 1. lAthosialis Brongniarti f. The figure given by Swinton ; copied from Geol. Mag., (2) i, pi. 14, 

 fig. 3. The arrow points :it tin- supposed file. 



Fig. 2. The same. \. The figure given by Murchison; copied from his Siluria, 3d ed., p. 321. The figure 

 given by Pietet is copied from the same. • 



Fig. 3. Brodia priscotincta. f. Showing simply the ueuration with the heavier cross veins. Drawn by 

 J. S. Kingsley. 



Fig. 4. The same. f. Cross section of the same at the point where the dotted line is placed in fig. 3, to 

 show the different planes at which the veins lie. Drawn by J. S. Kingsley. 



Fig. 5. The same. ^. A bit of the costal margin from near the tip of the wing, showing the double row 

 of approximated depressed teeth. Drawn by J. S. Kingsley. The positions of figs 5 and 6 upon the plate 

 would better have been reversed. 



Fig. 6. The same. \'. A bit of the same margin near the base, showing the single row of more distant 

 and elevated teeth. Drawn by J. S. Kingsley. 



Fig. 7. The same. \. The whole wing and stone. Drawn in color by J. H. Blake. 



Fig. 8. Lithosialis Brongniarti. {. The figure given by Woodward; coj)ied from the Quart. J-ourn. Geol. 

 Soc. Lond., xxxii, pi. 9, fig. 2. 



Fig. 9. The same. \. The figure given by Mantell ; copied from his Medals of Creation, 1st. ed. n, p. 578. 



Fig. 10. Archaeoptilus ingens. \. Cross section at the point where the dotted line is placed in fig. 11, to 

 show the different planes at which the veins lie. Drawn by J. S. Kingsley. 



Fig. 11. The same. \. Drawn by J. S. Kingsley. 



Fig. 12. The same. \. Restored to its presumed size, etc. Drawn by S. II. Seudder. 



An abstract of this paper was published in the Geological Magazine (2), vm, 293-300; July, 1881. 



