100 OETHOPTERA. 



b\ Hind tibiae provided with 12 spines in the outer row. 

 [Antilles and Eastern South America.] 

 c 1 . Hind tibise for the most part red. Insects rather small. 

 d\ Tibise with apical fourth bluish. [Islands of St. 



Thomas and Hayti.] [gregarius, Sauss.] 



d*. Tibise wholly red. [Pernambuco, Brazil.]. . . . \_pratensis, sp. n.] 

 c 2 . Hind tibiae brownish-purple. Insects larger. [Southera 



Brazil.] [brasiliensis, sp. n.] 



b*. Hind tibise ? [West Coast of Ecuador, Island of Puna.] [peragrans, Stal.] 

 A 2 . Tegmina more densely veined, in advance of the middle 

 closely reticulate, the post-radial area densely and irregu- 

 larly reticulate and without an intercalary vein ; frontal 

 costa tumescent ; posterior lobe of the pronotum longer 

 than the anterior. 

 b\ Hind tibiae with 9-12 spines in the outer row ; the inner 

 claw more than twice as long as the outer, straight on 



the basal half or two-thirds. [South America.] . . . [Pseudostauronotus, Brunner ?] 

 c 1 . Hind tibise provided with fewer spines (9-11) in the 

 outer row. Size moderate. 

 d 1 . Tegmina irregularly marked with rather small dark 

 blotches. Hind tibiae pale, with the apical third 



bluish [conspersus. sp. n.] 



d 2 . Tegmina more regularly marked with larger spots. 

 Hind tibise not blue-tipped. 

 e 1 . Largely green, or with the hind tibise and the 

 lower sulcus of the femora red. Hind tibise with 



9 spines in the outer row \_pictus, Bruner.] 



e 2 . Largely brown and testaceous ; hind tibise testa- 

 ceous, the lower sulcus of the hind femora deep 

 blue. Hind tibise with 10 spines in the outer 



row. [Brazil and Paraguay.] \brunneri, Gigl.-Tos.] 



c\ Hind tibise with 12 spines in the outer row. Size large. 



[Paraguay.] [borellii, Gigl.-Tos.] 



b x . Hind tibise with 13-16 spines in the outer row, the inner 

 claw not more than twice as long as the outer, gently 

 bowed from the base. [Mexico and Central America 



and ? California.] Plectrotettix, McNeill. 



c 1 . Insects variable in colour, but never in great part green 



or testaceous. Tegmina with the dark and light 



markings occupying most of the wing. 



d 1 . Hind tibise at the base reddish -yellow, the apical third 



bluish, usually with 14 spines in the outer row. 



Hind femora very seldom crossed above by dusky 



bands. [Eastern Mexico.] 1. viatorius, Sauss. 



