ILLUSTRATIONS 
Plate I 
Fig. 1. Centrochares horrificus Westwood, nymph. 
2. Pyrgonota semperi Stal, lateral outline. 
3. Pyrgonota semperi Stal, front view of apex of pronotal horn. 
4. Tricentrus fairmairei Stal, nymph. 
5. Tricentrus acuticomis sp. nov., lateral outline. 
6. Tricentrus acuticomis sp. nov., frontal outline. 
7. Cryptaspidia elevata sp. nov., lateral outline. 
8. Cryptaspidia longa sp. nov., lateral outline. 
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