PLATE XI. 
Fig - . 1. Pterygia arietina, page 69. Imago. 
Fig. 1 a. Front view of frons and short supra-humerals. 
Fig. 1 b. The dorsal spinose protuberance. 
Fig. 1 c. The middle leg of the* same insect. 
Fig. 2. Pterygia cerviceps, page 69. Imago. 
Fig. 2a. The frons by the front aspect. 
Fig. 3. Pterygia hispida, page 70. Imago, showing the free pronotum with its 
tubercles. The spatulose form of the front legs is overdrawn in the figure. 
Fig. 4. Pterygia postica , page 70. Imago. The female, with expanded wings seen 
in perspective. The tegmina have their insertions below, not above the 
pronotal margin, as here is drawn. 
Fig. 4(7. The tegmen and wings of the same. 
Fig. 5. Pterygia postica, page 70. Imago. The male, which is smaller. The white 
portion in the figure is a patch of pilose matter. 
Fig. 5(7. The terminal rings of the abdomen. 
Fig. 6. Pterygia dcemoniaca, page 71. Imago black and spinose. 
Fig. 6a. Front view of the head and the almost foliaceous frons. The fore legs are 
slightly spatulate. 
