34 TETTFGID.-E OF NORTH AMERICA 



SYNOPSIS OF SUBFAMILIES AND GENERA. 



Small orthoiJteia presenting no aroleum between the tarsal 

 claws; the pronotum completely covering the body; elytra 

 small and lobiform. 



1. Anterior femora more or less compressed, carinate 



above. 



2. Frontal costa furcate between the eyes, the branches 



strongly diverging, forming a frontal scutellum. 

 I. subfamily Cladonotin^. 



3. Body largely compressed, above completely folia- 



ceous. 



4. Pronotal margins in profile forming a subrhomboidal 



contour. Gen. Clioripliyllimi, Serv. 



4. 4. Pronotum at the superior dorsal margin in profile, 



arcuate-subangulatc. Gen. riiyllouotus, gen. n. 

 3. 3. Body not compresso-foliaceous. 



5. Pronotum sharply tectiform, anteriorly truncate, 



median carina cristate, arched anteriorly, nearly 

 straight posteriorly. Gen. Tyloicttix, Morse. 



2. 2. Frontal costa narrowly or moderately forked. Pos- 

 terior angle of lateral lobes of pronotum laterally 

 little produced, posteriorly obliquely truncate. 

 II. subfamily Metrodorin^. 



6. Median carina of pronotum conspicuously serrato- 



undulate. Elytra minute, elongate. Verte.x con- 

 cave. Gen. Chiriqnia, Morse. 



7. Pronotum flat above, little depressed. Elytra lanceo- 



late. Body slender. Gen. Otnniba, Morse. 



7. 7. Pronotum strongly depressed. Body stout. Vertex 



truncate. Elytra and wings absent. 



Gen. Platyl/iorus, Morse. 



8. Posterior angle of the lateral lobes of pronotum 



turned downward, more or less rounded, not 

 obliquely truncate. Antennae with twelve to four- 

 teen articles. Antero-dorsal margin of pronotum 

 truncate or angulate, or rarelj' angulate produced. 



III. subfamily Tettigin^. 



