37 



testaceous. Head and pronotum, with the exception of lower 

 posterior third, dark brown, the latter being light 

 testaceous : wings testaceous, having most of the veins and 

 cross veins black or dark brown, some of them heavier than 

 others and giving the wings a slightly mottled appearance. 

 Hind femora with indications of bands, especially on the 

 inner face; the knees jDartly black, lower sulcus light 

 testaceous : hind tibia, with the apical half reddish, basal half 

 testaceous ; lower side of body, especially abdomen whitish, 

 balance becoming brownish above. 



Length of body : c? lO to 11 mm, ? 14 mm; pronotum, c? 

 2.50 to 2.50. ? 2.75; tegmina, d 10 mm, 9 13 mm; hind 

 femora, cJ' 7 mm, + lOmm. 



Fairly common during the month of December at Bahia 

 Blanca. Not seen elsewhere, nor observed in any of the 

 collections. 



GENUS PLECTROTETTIX, McNEILL. 



7'. jiicfu.s n. sp. 



General color above dark brown, beneath white or light 

 yellow; above varied with green and light testaceous. The 

 posterior tibiae and under side of posterior femora bright 

 carmine to purple, the hind femora with two oblique light 

 bands on outer and inner faces, also a preai3ical annul us of 

 same color, and rather broad, bright colored annulus at base of 

 hind tibiae. The fastigium of the vertex blunt and gently 

 sulcate above ; the lateral foveolae represented only by a few 

 punctures forming an interrupted depression about twice as 

 long as broad in the male ; in the female nearly obliterated ; 

 frontal costa rather prominent and broad, gradually widening 

 from a point immediately above the base of the antennae to 

 the clypeus, little or not at all sulcate. Pronotum with the 

 median carina percurrent, severed only by the last transverse 

 groove, a little in advance of the middle. Lateral carinae of 

 pronotum greenish or testaceous ; converging towards the 

 middle where they are interrupted between the transverse 

 sulci; sides of pronotum either green or light testaceous 



