592 MESOZOIC INSECTS OF QUKKXSLAND, iv. 



of venation had been eliminated, and a tliin membrane, in which 

 the veins were arranged more or less parallel to one another and 

 to the wing-border. Probably the highest point reached by this 

 line of evolution to-day is to be seen in the dominant family 

 Pentatomidrt', in which the shield-shaped or " cut-into-five " ap- 

 pearance of the insect becomes perfected, and is often enhanced 

 by bizarre sculpture and brilliant colouration. Text-fig. 22 shows 

 the outline of such an insect, with the five separate areas of the 

 shield-design named. 



BIBLIOGRAPHY. 



1. Handlirsch, A., 190S. — Die Fossilen lusekten, etc. Leipzig. {Pahvon- 



tinklce, pp. 018-627, and Atlas, Plates xlix.-l. ; Phjdogeny of Hemip- 

 tera, pp. 1244-1249; Piotoliemiptera, p. 387, and Atlas, Plate xxxvii., 

 figs. 21-23, Plate xxxviii., figs. 1-4; Pala?ohemipteia, p. 390, and 

 Atlas, Plate xxxvii., figs. 24-27. 



2. Meyrick, E., 1916. — "Note on Some Fossil Insects."' Knt. Mo. Mag., 



3rd Ser,, No.20, (No.627), Aug. 1916, pp. 180-182. 



3. TiLLYARD, R. J., 1916. — " Mesozoic and Tertiaiy Insects of Queensland 



and New South Wales." Queensland Cleol. Survey, Publicatioii 

 No. 253, pp.31 -33, and Plate 3, fig. 6. 



EXPLANATION OF PLATE LIX. 



Fig. la. — Restoration of right hemelytron (forewing) of Daastania pulchra 

 Till., based upon the preserved portions of this fossil and of the 

 allied Dmistaniopsis triassica, n.g. et sp. ; ( x ,■>), 



Letterimi of Text-Jlynrefi. 

 A, analis — C, costa — c.h., coriaceous border — d, clavus — co, coriuni — 

 Cu, cubitus; Cuia, Cuib, Cu.j, its branches on the membrane^-wi or w?/>, 

 membrane — M, media; Mj to M4, its branches on the membrane — n, node 

 — n , antinode — pn, pronotum — R, radius; R^ to Rg, its brandies on the 

 membrane — Rs, radial sector — sc, scutellum — Se. subcosta. 



