246 PROCEEDINGS OF THE NATIONAL MUSEUIVI vor,. im 



Legs yellowish, pubescent. Anterior tibiae a little compressed, 

 enlarged at apex, presenting a large, oval, external typanum and a 

 very small, round internal one; apex armed with three rather strong 

 apical spurs which are very close together; metatarsi compressed, as 

 long as the other two joints united. Medium tibiae armed with four 

 apical spurs. Posterior femora rather short and thick; tibiae a little 

 shorter than the femora, armed with long and strong spines, six on the 

 external, five on the internal margin; the two large apical spurs equal 

 in length; metatarsi with seven to eight denticles on each superior 

 margin. 



Male: Elytra smoky, extending to the apex of the 5th abdominal 

 tergite; muTor feebly wider than long, much rounded backwards, with 

 almost right anterior angle, dividing vein in the middle, curved (this 

 vein is variable in the different specimens of the species) ; two oblique 

 veins; anal field short, with three veins and regular, long areolae; 

 lateral field high, pellucid in the inferior part, with five regularly 

 spaced veins and the Sc bearing one branch. Wings very short. 



Female (macropterous form): Elytra longer than those of the male, 

 rounded at apex; dorsal field with very regular, feebly oblique veins; 

 Cu bearing three branches, followed by five veins; lateral field as in 

 the male; Sc plain or furcate at apex. Wings decidedly caudate. 

 Ovipositor straight, with apical valves perfectly limited by a strangu- 

 lation of the stem, lanceolate with straight margins, flat above. 



Dimensions (in millimeters): Length of body, cf 14.0, 9 15.0, 

 pronotum, cf 2.9, 9 3.0; posterior femur, cf 9.5, 9 10.0; elytra, cr6.5, 

 9 8.2; ovipositor, 8.5; wings of female extending beyond elytra by 

 11 mm. 



Genus Miogryllus Saussure, 1877 



Miogryllus convolutus (Johansson) 



Gryllus convolutus Johansson, in Linn6, Araoenitates academicae, vol. 6, p. 399, 

 1763. 



Specimens examined: Bolivia: Blanca Flor, January 1922 (Icf), 

 Mann. Peri5: Pucallpa, Sept. 16, 1947 (299), Oct. 8, 1947 (499), 

 Oct. 13, 1947 (19), Jan. 10, 1948 (19), Mar. 3, 1948 (1 cT, 19), Schunke; 

 Tingo Maria, November 1949 (19), December 1949 (Icf , 19), January 

 1950 (19), Feb. 24, 1950 (1 nymph), Feb. 26, 1950 (Icf), AUard. 



Remarks: The specimens from Tingo Maria and one male from 

 Pucallpa are micropterous; the remainder are macropterous. 



Miogryllus verticalis (Ser>ille) 



Gryllus verticalis Serville, Histoire naturelle des insectes orthoptlres, p. 343, 1839. 



Specimens examined: PERrJ: Chanchamayo, May 29, 1948 (Icf), 

 Schunke. 



