TEYXALIN^l. 3 L 



j. Posterior tibiae with fewer (10-11) spines in 

 outer row ; tegmina without a decided 

 humeral vitta; eyes of median size, some- 

 what bulging Orphulella, Giglio-Tos. 



jj. Posterior tibiae with more (13-14) spines in 

 outer row ; tegmina with a decided humeral 



vitta; eyes rather large, but feebly bulging. Parachloebata, Saussure (MS.). 

 hh. Lateral carinas but feebly developed on the 

 prozona when compared with those on the 



metazona ; eyes subglobular, large .... Linoceratium, Bruner. 

 gg. Lateral carinae of pronotum quite or nearly as 

 prominent as the median, straight or but little 

 divergent posteriorly; the prozona decidedly 

 longer than the metazona; the lateral lobes 

 fully as long as, or longer than, deep. 

 h. Lateral lobes of pronotum slightly tumid in 

 descending by the obliquity of the upper portion ; 

 the lateral carinae very gently divergent on meta- 

 zona; discoidal field of wings of <J distinctly 



narrowing apically Clinocephalus, Morse. 



hh. Lateral lobes of pronotum plane, vertical ; lateral 

 carinae parallel on metazona as on prozona; 

 discoidal field of wings of $ hardly narrowing 



apically , Dichromorpha, Morse. 



ee. Antennae long, about or more than half as long again 

 as head and pronotum together ; fastigium of vertex 

 furnished with a distinct median carina. 

 /. Scapular area of tegmina not broad and not regularly 

 reticulate with oblique veins ; anterior portion of 

 wing of J broadly and regularly fenestrate (remind- 

 ing one of the elytron of a male (Ecanthus) ; spines 



on outer edge of hind tibiae about ten in number . Phaneroturis, Saussure (MS.). 

 ff. Scapular area of tegmina rather broad and regularly 

 reticulate with oblique veins ; wings of $ somewhat 

 aborted, the anterior portion not fenestrate ; spines 

 on outer edge of hind tibiae about 14 in number . Chloealtis, Harris. 

 AA. 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. 

 b. Tegmina with ill-formed intercalary vein. 

 c. Inner apical spurs of hind tibiae subequal in length ; apical 

 portion of scapular field of <$ tegmina (and sometimes the 

 adjoining parts) so dilated that the broadest part of the 

 tegmina lies beyond the middle. 



