232 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



DD. Cerci with mesal portion contrastingly swollen. 



E. Form moderately slender. Vertex not strongly but distinctly 

 ascending, fastigium of vertex two-thirds width of proximal antennal 

 joint. Eyes moderately large. Convex callosity of lateral lobes 

 moderately broad. Abdomen immaculate, with distal portion, in- 

 cluding cerci, pale yellow brown. Ventro-external margins of caudal 

 femora armed with four to six spines. unicolor Bruner 



EE. Form very slender, distinctly attenuate. Vertex not ascending, 

 fastigium of vertex slightly wider than proximal antennal joint. 

 Eyes normal. Convex callosity of lateral lobes very broad. Abdo- 

 men immaculate with distal portion, including cerci, pale yellowish. 

 Ventral margins of caudal femora unarmed. 



resacensis Ilehn and Hebard 

 CC. Cerci armed with a more delicate ventral (vertical) tooth so that its 

 base and often the greater portion is concealed from above, mesal portion 

 of cercus very contrastingly swollen, tooth situated at proximal base of 

 this swelling, (distal portion of cercus greatly depressed). 

 D. Coloration not unusually brilliant or distinctive. 



E. Fastigium of vertex slightly less to slightly more than one-half 

 width of proximal antennal joint. Convex callosity of lateral lobes 

 moderately broad. Ventro-internal margins of caudal femora armed. 

 Discoidal and anal fields of tegmina, and adjacent portion of wings 

 when at rest, distinctly darkened. (Swollen mesal portion of cercus 

 with section above tooth produced overhanging and rather sharply 

 rounded, distal portion elongate, very strongly depressed, particularly 

 on inner side. Form moderately slender. Eyes moderately large. 

 Ventro-external margins of caudal femora armed normally with 

 four and four spines. Wings iridescent.) equatorialis (Giglio-Tos) 

 EE. Fastigium of vertex broader. Convex callosity of lateral lobes 

 very narrow. Ventro-internal margins of caudal femora unarmed. 

 Discoidal and anal fields of tegmina, and adjacent portion of wings, 

 when at rest, not darkened. 



F. Cerci of same type as in equatorialis but decidedly elongate, 

 varying in production and outward curvature of distal portion to 

 very elongate. Form moderately slender to moderately robust. 

 Eyes moderately large. Fastigium of vertex slightly less than, to 

 fully two-thirds as broad as proximal antennal joint. Ventro- 

 external margins of caudal femora armed normally with two and 

 three spines.^ (Wings somewhat iridescent.) saltator (Saussurc) 



^ In five specimens from the large series from Trinidad and Venezuela, these 

 margins are unarmed ; in four specimens from considerable series from Domin- 

 ica and Trinidad, the cephalic and meilian tibiae have the ventro-cei)halic 

 margins armed with seven, instead of the normal six, spines. The jiresent 

 species is the most abundant and the most variable over the greater portion 

 of South America, and material nmst be studied from every aspect if accurate 

 results are to be obtained. 



