PLATE LIY. 
Fig. 1. Centrotypusflexuosus $, page 237. 
Fig. la. Head, bearded frons, and suprahumerals. 
Fig. 2. Centrotypus alatus, page 237. 
Fig. 2 a. Front view of the expanded processes. 
Fig. 3. Centrotypus tibialis , page 238. The supraliumeral processes here are less 
flattened and the costal parts of the tegmina are denser in structure. 
Fig. 3 a. The high metopidiuni, which is very pilose. 
Fig. 4. Centro tyjjHS securis, page 238. 
Fig. 4a. Pemarkable for the pick-axe form of the punctured pronotum. 
Fig. 5. Centrotypus ater, page 238. Part of the pronotum and process with the 
tegmen and wing of one side. These are coarsely veined. 
Fig. 6. Ibiceps falcatus, with its curved and slightly flattened processes, page 239. 
Fig. 7. Ibiceps ansatus, with its goat-like horns, page 239. 
Fig. 7a. The frons and high metopidiuni, which is almost cephalic in character, of 
the same insect. 
Fig. 7b. The tegmen of the same. 
