Bruner: South American Crickets. 377 



Synopsis of the South American Genera of Achetid^. 



A. Posterior tibiae with the inner upper spur distinctly longer than the middle 

 one. Ocelli arranged in a triangle. Ovipositor rudimentary. 



Anurogrylltis Saussure. 

 AA. Posterior tibiae with the inner upper spur of equal length or shorter than the 

 middle one. Ocelli variable. Ovipositor not rudimentary, fully devel- 

 oped. 

 b. Anterior tibiae furnished with auditory openings on both margins; the 

 external one larger and oblong, the internal smaller, circular. 

 c. Species larger. Tegmina of the female with the dorsal areoles rhomboidal , 

 in the male the tympanum is provided with three to four oblique 

 veins. 

 d. Ocelli placed in a transverse row. Body, pronotum, and limbs 

 comparatively smooth, almost bare. Lateial lobes of the pronotum 

 nearly quadrate. [Chiefly Old World forms.]. .Achela Fabricius. 

 dd. Ocelli placed in a triangle. Body, pronotum, and limbs hirsute or 

 pilose. Lateral lobes of the pronotum more or less strongly oblique. 



[Distribution quite general] Gryllus Linnaeus. 



cc. Species smaller. Tegmina of the female with the dorsal areoles quadrate; 

 in the male the tympanum is sometimes provided with two oblique 



veins Miogryllus Saussure. 



hb. Anterior tibiae without an auditory opening internally. The tegmina fre- 

 quently greatly abbreviated Gryllodes Saussure. 



Genus Anurogyllus Saussure. 



Anurogryllns Saussure, Mem. Soc. Geneve, XXV (1877), p. 283; Kirby, Syn. Cat. 

 Orth., II (1906), p. 23. 



This is exclusively an American genus, unless we include the A. 

 australis, which is credited to Australia, and its representatives are 

 confined to the tropical and subtropical portions of both North and 

 South American countries. According to Kirby's Catalog there are 

 an even half dozen species. The females are noted for the entire 

 absence, or great abbreviation, of the ovipositor. The males, if we 

 are to judge from the single species known quite well to the author, 

 A. daraziamis Saussure, are among the noisiest of the crickets. Ojily 

 a single species is recognized among the material at hand. 



37. Anurogryllus clarazianus (Saussure). 



Gryllodes clarazianus Saussure, Miss. Mex., Orth. (1874), p. 412, PI. 8, fig. 31. 

 Anurogryllus clarazianus Saussure, Mem. Soc. Geneve, XXV (1877), p. 285; 

 Kirby, Syn. Cat. Orth., II (1906), p. 24. 



Habitat. — Chapada near Cuyaba, Matto Grosso, Brazil, one male 

 taken in March (H. H. Smith); Prov. del Sara, Bolivia, 350 M. and 

 450 M. December (J. Steinbach), two males, two females. 



