o 



(1(1 Anteuuie tilironn or clavate, medium Iciigtb ; vertex generally 

 (but not always) with lateral foveolte, wLicL are linear : 



e. Auteunas clavate (a Hat club at the apex) Gomphocerm 



ee. Antennae filiform, not clubbed at the apex Stenubothrus. 



bb. Face vertical, or nearly so : 



c. Head and body compressed on the sides, narrow ; vertex acumi- 



nate in front; lateral foveohe sub-distinct or obsolete; face some- 

 what oblique or curved Trayocephala. 



cc. Head globose, not comijressed ; vertex not acuminate in front ; 

 face vertical : 



d. Median carina of the prouotum elevated into a high arcuate and 



slightly denticulate crest ; no lateral carince TropuMoijlius. 



dd. Median carina of the pronotum sub-cristate, slightly arcuate 



or nearly straight, not denticulate ; lateral carina; wanting on 



the anterior, and acute or sub-acute on the posterior, lobe Tomonotus. 



ddd. Median carina of the pronotum only a raised line, or but 



slightly elevated : 



e. Vertex without lateral foveolae : 



/ Pronotum sub-cylindrical, without lateral cariute ; elytra shorter 



than the abdomen, but not in the form of scales Boopedon. 



ff. Pronotum with the disk flat, distinctly tricarinate ; carinae 



entire ; elytra in the form of scales ; insects unable to fly Brachypcplus. 



ee. Vertex with lateral foveolae : 



/. Lateral foveolae of the vertex triangular (Edipoda. 



ff. Lateral foveolae of the vertex quadrilateral Stauronotus. 



A A. Prosternum slightly tuberculate Stetheophyma. 



Section I. — Face somewhat oblique, straight; sides of the pronotum and 

 head flat and generally perpendicular; disk of the pronotum usually flat, 

 forming nearly a right angle with the sides ; the median carina (except in 

 Acrolophitus hirtipes) minute. Vertex somewhat advanced in front of the 

 eyes. The pronotum approaches the sub-cylindrical form in some of the 

 Stenobothri. The posterior femora are less enlarged near the base than in 

 the following section ; and the upper and lower carinas are not prominent. 



The following genera belong to this section: Oxycoryjjhus, Chryso- 

 chraon, Acrolophitus, Pedioscertetes, Stenobothrus, Gomj^hocerus. 



I am not acquainted with Stetheophyma, but give it a place in the next 

 section pi'ovisionally. 



OXYCORYPMIIS, FiwcSu 



Body medium size. Head somewhat pyramitlal ; face oblique; occiput 

 and vertex ascending; the vertex produced in front of tlie eyes, triangular, 

 blunt or sub-acute at the apex; its upper margiji acute, with a lateral ])ranch 

 to cucli ocellus, inclufUng on each side a triangular foveola. The extremity of 



