386 Annals of the Carnegie Museum. 



South American regions. Thej- may be separated by the subjoined 



key : 



Synopsis of the South American Genera of Phalangopsitid/e. 



A. Pronotum wider than long, its lateral lobes quadrate, or rounded, or even 

 angulated, but not narrowed in front. 

 b. Lateral lobes of the pronotum quadrate, the lower margin horizontal. Front 

 between the antennae broad, not rostrate, the posterior ocelli distant 

 -from each other. Hind femora somewhat shortened, the apex not 

 slender. 

 c. Tegmina of the male fully developed, the tympanum complete, the 

 speculum triangular, divided by two veins. Pronotum with the 

 lateral lobes distinctly quadrate. 

 d. Anterior tibiae with an auditory opening on each side. The median 



vein of the tegmina branched Lerneca Walker. 



dd. Anterior tibiae with an auditory opening only on the inner side. 

 Tegmina with the median vein not branched, simple. 



Proslhacusla Saussure. 

 b. Lateral lobes of the pronotum oblique, rounded or angulate, the lower margin 

 ascending towards the rear. Front between the antennae narrow, 

 sometimes narrowly rostrate. 

 c. Hind femora mediocre, gradually attenuated, the apical portion some- 

 what heavy, not filiform. 

 d. Anterior tibiae without an auditory opening. Body of the female 



apterous (male also without wings) Laranda Walker. 



dd. Anterior tibiae with distinct auditory openings. Tegmina of male 

 with the speculum divided by many veins. 

 e. Rostrum of the front very narrow; the posterior ocelli rather close 

 together. Anterior tibiae with openings on both sides (some- 

 times almost closed externally). Posterior metatarsus carinate, 

 uniseriately serrate. (LTpper inner spur of the hind tibiae 



deformed.) Paragryllns* Guerin. 



ee. Rostrum of the front narrow; the posterior ocelli less closely 

 situated. Front tibiae with the auditory opening on the outer 

 side. Posterior metatarsus sulcate, biseriately serrulate. The 



spurs normal Eciecous Saussure. 



cc. Legs longer. Hind femora swollen at the base, the apex slender. 

 d. Anterior tibiae provided with auditory openings. 



e. Rostrum of the front very narrow; the posterior ocelli very near 

 together. (Speculum divided by two veins or triangular, 

 not divided). 

 /. Anterior tibiae furnished with foramina on both sides. 



g. Rostrum of the front triangular, the anterior ocellus located 

 on its apex in front. Tegmina corneous, without veins 

 above. Both sexes winged Ainusus Saussure. 



* Luzara Walker also runs here. Whether distinct or not I cannot say. 



