Bruner: South American Crickets. 417 



gg. Posterior metatarsus smooth, not toothed. Tegmina of 

 male provided with two divergent obHque veins. Front 

 tibiae with oblong auditory openings on both sides. 



Antennae excessively long Slencecanthus Chopard. 



ff. Body somewhat robust or depressed; head large, the rostrum 



of the front wide (Posterior metatarsus one- to three-toothed. 



Tegmina with two oblique veins.). . . . Amhlyrhelhus Kirby. 



dd. Tegmina of male with one or two incomplete oblique veins. Valves 



of the ovipositor lanceolate, acute. 



e. Surface of the head, pronotum, and legs somewhat wrinkled and 



strongly pubescent. Ocelli arranged in a triangle. Auditory 



opening of the front tibiae located on the inside. 



Laurepa Walker. 

 ee. Surface of the head, pronotum, and legs smooth and glabrous. 

 Ocelli arranged in a transverse arcuated line. 

 /. Auditory opening on the inner side. Tegmina of the female 

 somewhat leathery, on the dorsal field the veins are distant 

 and pectinated; the oblique branches of the mediastine vein 

 gently flexuous. Head and pronotum a little convex. 



Hapilhus Uhler. 



ff. Auditory openings of anterior tibiae located on both sides. 



Tegmina of the female membranous, veins longitudinal; the 



mediastine vein with its oblique branches numerous and 



s-sinuous. Head and pronotum somewhat flattened from 



above Orocharis Uhler. 



bb. Male tegmina without a tympanum, in this respect similar to the female. 

 c. Anterior tibiae furnished with auditory apparatus. 



d. Auditory openings found on both sides of the front tibiae. 



e. Ovipositor straight, long, and slender, the valves acutely dentate 



or obtuse Podoscirtiis Serville. 



ee. Ovipositor short, depressed, sublamellar, valves flattened. 



Heterecous Saussure. 



dd. Anterior tibiae provided with a single auditory opening. Tegmina, 



when present, fully developed, elongate, the median vein 



branched. 



e. Auditory opening located on the inner side of the anterior tibiae. 



/. Body normal. Head short, somewhat elevated. Pronotum 



rather short, wider than long, its posterior margin bisinuate, 



the canthi more or less conspicuous. Ovipositor slender, 



not flattened from above Aphonomorphus Rehn. 



ff. Body slender, cylindrical. Head prominent, elongate, and 

 elevated. Pronotum also elongate, cylindrical, the hind 

 margin transverse, subarcuate, without canthi. Ovipositor 



flattened Stenaphonus Saussure. 



ee. Auditory opening placed on the outer side of the anterior tibiae. 



Anaudus Saussure. 



