HANCOCK 35 



9. Vertex advanced beyond the eyes, wider than one of 



them, in profile united with the frontal costa, 

 generally angulate anteriorly. 

 10. Antennae with twelve, rarely thirteen articles. Pro- 



notum with the dorsal front margin more or less 

 angulate produced, median carina cristiform, more 

 or less arcuate longitudinally; median lobule of 

 the posterior margin of lateral lobes generally 

 feebly developed; the posterior elytral sinus shal- 

 low or moderately deep. Gen. Nouiotcttix, Morse. 



10. 10. Antennte with fourteen or often thirteen articles. 



Pronotum generally not advanced upon the head 

 to the eyes; median lobule of posterior margin 

 of the lateral lobes more or less well developed; 

 the posterior elytral sinus quite deep. 



Gen. Tettix, Charp. 



11. Vertex viewed in profile united with the frontal costa 



rounded or depresso-rounded, little advanced 

 beyond the eyes, equal to or considerably wider 

 than one of them. 



12. Vertex considerably wider than one of the eyes; 



branches of the frontal costa more or less strongly 

 divergent. Antenna; consisting of twelve or thir- 

 teen articles. Gen. Ncotcttix, Hanc. 



13. Antenna; strongly filimentous-elongate. Body small. 



Facial costa rather narrowly furcate, subparallel, 

 viewed in profile sinuato-convex. Median carina 

 of pronotum undulate. Distribution West Indies. 



JSIicronotus, gen. n. 



14. Eyes small, distinctly globose. Antennc-e short and 



stout. Vertex distinctly wider or twice as wide as 

 one of the eyes, advanced about as far or little 

 beyond the eyes. Body rugose or minutely tuber- 

 culose. Distribution southwestern United States 

 and Mexico southward. Apotettix, gen. n. 



15. Vertex equal in width to one of the eyes. Body 



narrow between the shoulders. Frontal costa 

 narrowly forked, straight, and evenly divergent. 

 Distribution California. Gen. Merotcttix, Morse. 



