ACRlDIDjE. 687 



Female. Testaceous. Head smooth; fore part of the vertex flat, 

 hexagonal ; front thinly punctured, with four well-defined keels, the inner 

 pair nearly parallel, the outer pair slightly diverging towards the face. 

 Eyes fusiform. Prothorax finely scabrous, with a very slight dorsal keel 

 and with transverse impressed lines; fore border slightly rounded ; sides 

 nearly straight; hind border elongated, rounded. Prosternal spine stout, 

 much rounded at the tip. Hiud femora a little longer than the abdomen 

 and than the hind tibiae; spines of the latter with black tips. Fore wings 

 pale cinereous, as long as the body, with several large spots and with a few 

 irregular bands which are formed by brownish veins. Hind wings pellucid ; 

 veins black, pale towards the base and towards the interior border. Length 

 of the body 24 lines; expansion of the fore wings 54 lines. 



It resembles A. peregrhmin in the markings of the fore wings, but the 

 prothorax is less widened hindward, and the prosternal spine is stouter. 



ACRIDIUM OBLIQUUM. 



Mas. Ferrugineo-fulvum, gracile ; capul inter oculos nigricante fascia- 

 turn ; prothorax scaber, postice latest-ens, vitth tribus nigricantibus 

 furcatis ; peclus Jlavo oblique bistrigatum ; prosterni spina acula, sat 

 gracilis ; femora postica extus flavo alrigata ; alee anticcB cinerea, 

 corpore vix breviores. 



Male. Ferruginous-tawny, slender, paler beneath. Head smooth, 

 with a blackish band between the eyes, somewhat higher than the pro- 

 thorax; lip of the vertex hexagonal; front largely punctured, with well- 

 defined keels; inner keels parallel; outer keels diverging towards the face. 

 Eyes dark reddish, elliptical. Prolhorax scabrous, widening hindward, 

 with three irregular blackish stripes; middle stripe forked towards the hind 

 border; side stripes forked in front; keel very slight; transverse impressed 

 lines well defined; fore border and sides nearly straight; hind border very 

 much rounded. Prosternal spine acute, rather slender. Pectus with a 

 yellow oblique streak on each side. Hind femora as long as the abdomen, 

 with a yellow streak on the outer side,- hind tibiae a little shorter than the 

 hind femora, their spines with black tips. Wings cinereous. Fore wings 

 nearly as long as the body ; veins piceous. Hiud wings with black veins. 

 Length of the body 14 lines; expansion of the fore wings 26 lines. 



a ? 



Genus 10. DIPONTHUS. 

 Acridium Diponthus, Stalj Bug. Resa, 328. 



1. DIPONTHUS NIGROCONSPERSUS. 

 Acridiurn nigroconspersum, Stal, Eug. Resa, 327. 

 Monte Video. 



2. DIPONTHUS ELECTUS, 

 Acridium elect um, Serv. Hist. Orih. 671. 

 Brazil. 



