DESCRIPTION OF THE PLATE. 



The accompanying plate is intended to show, so far as can be done by 

 simple outline-figures, the distinguishing characteristics of a few of the genera 

 mentioned in this work, esiiecially those not so generally known, those pecu- 

 liar to the United States, or those but recently ascertained to belong to its 

 fauna : 



1. Tropidoloplms formostis, Thos. 



9 From nature. 



2. Ehomalea centurio, Burm. 



From nature. 



3. Tragoce2)hala viridifasciata, Harr. 



9 After the figure in Flint's edition of Harr. Een. 



7. Same. Var. infuscata. 



From nature. Given to show the prominent frontal costa and vertex, but the 

 lower part of the face should be as in Fig. 3. 



4. Brachypeplus magmis, Girard. 



From nature. 



5. Galoptenus differentialis, Thos. 



9 From nature. The Calopteni are generally considerably smaller than this, as 

 this represents our largest species. 



6. Oxycoryphus coinpressicorms, Latr. (Eiu-oijean.) 



From Fischer's Orth. Em-op. 



8. Pectus of Acridium amcrichnum, showing the prosternal spine, sp. 



9. Stenobothrus. Given to show the lateral foveola3 of the vertex. 



From Fischer's Orth. Europ. 



10. Pyrgomorplia punctipennis, Thos. 



From nature. 



11. Boopedon nubilum, Thos. 



From nature. 



12. Tryxalis brevipennis, Thos. 



From nature. 



13. AcrolopMtus Mrtipes, Thos. 



From nature ; but the vertex is not as prominent as it should be. It should round 

 upward from the occiput, so as to be about half the length of the eye 

 higher at the tip than is shown in the figure. 



14. Tcttix . 



Copied from Fischer's Orthop. Burop., to show the general form. 



