July ,8,8.] PSYCHE. 237 



coidal field of wings in $ hardly narrowing apically. 



Dichromorpha Morse. 



e'^. Antennae long, about or more than half as long again 



as head and pronotum together ; fastigium of vertex with a 



median carina ; scapular area of tegmina distinctly dilated in 



both sexes, but especially in the male. . Chloealtis Harris. 



A -. Foveolae of the vertex always present, visible from above, their plane forming 



an obtuse angle with the plane of the fastigium ; face usually more nearly vertical 



than in the alternate category. 



/' ^ Tegmina with well-formed intercalary vein. 



r •. Inner apical spurs of hind tibiae subequal in length ; apical por- 

 tion of scapular field of ^ tegmina (and sometimes the adjoining parts) 

 so dilated that the broadest part of the tegmina lies beyond the middle 

 (Stenobothri.) 



d^. Antennae filiform. 



e^. Face considerably oblique, straight or little rounded; fove- 

 olae of vertex slender ; lateral lobes of pronotum longer than, 

 or fully as long as deep ; interspace between the mesosternal 

 lobes narrower than the lobes themselves. 



/'. Fastigium with a distinct median carina ; lateral carinae 

 of pronotum subparallel, the disk fully two and a half 

 times as long as posterior breadth ; scapular area of ^ 

 tegmina abruptly and greatly widened beyond the middle. 



N'apaia McNeill. 



_/-. Fastigium with no median carina but only a colored 



line ; lateral carinae of pronotum distinctly though not 



greatly sinuate, the disk thereby clepsydral and hardly 



twice as long as posterior breadth ; scapular area of $ 



tegmina gradually and less conspicuously widened beyond 



the middle. .... Stenohothrus Fischer. 



e'-. Face little oblique, strongly rounded; foveolae moderately 



broad, never more than twice as long as broad ; lateral lobes 



of pronotum deeper than long ; interspace between mesosternal 



lobes as broad as the lobes themselves. 



/'. Hind margin of pronotum more angulate than front 

 margin ; posterior margin of lateral lobes straight ; teg- 

 mina and wings fully developed. 



Platybothrus n. g. (Note 7.) 

 /■-. Fore and hind margins of pronotum equally (and 



