Bruner : South American Locusts. 499 



of the pronotum and middle of meso- and meta pleura obliquely 

 dirty white; a broad band back of the eyes and along the upper 

 portion of the sides of the pronotum velvety black, in some specimens 

 with an olivaceous tinge. Hind femora ai the base and along the 

 lower edge of outer disk flavous, remainder largely fuscous and bla< 1. , 

 except the lower edge and sulcus, which isdeep gray, almosl lead-color 

 with a greenish tint. Hind tibiae fuscous basally, becoming green 

 tinted apically. Antenna' flavous at the base, changing to ferruginous 

 apically. 



Length of body, o", 22.5 mm., 9, 30 mm.; of pronotum, d", 5-75 

 mm., 9, 7.85 mm.; of tegmina, cf, 4.5 mm., 9, 5 mm.; of hind 

 femora, o", 13 mm., 9 , 1 « > - ,S mm. 



Habitat. — Santa Cruz de la Sierra, Bolivia, at an elevation above 

 sea level of 450 meters, one male and two females, collected by J. 

 Steinbach. 



The types, male and female, are deposited in the Carnegie Museum. 



Genus Paradichroplus Brunner. 



Paradichroplus Brunner v. YVattenwyl, Ann. Mus. Genova, XXXIII, p. 145 

 (1893); Giglio-Tos, Boll. Mus. Zool. Anat. Comp., Torino, IX, No. 184, p. 20 

 (1894)- 



The present genus is composed of several medium-sized, nearly 

 apterous locusts, which remind one very strongly of some of the 

 North American genera of Melanopli. Its representatives are most 

 abundant in the region comprised by southern Brazil, Paraguay, 

 northern Argentina, and eastern Bolivia and Peru. The subjoined 

 table will enable the student to separate the species described previ- 

 ously, as well as the three now characterized: 



Synopsis of the South American Species of Paradichroplus. 



A. Hind tibiae provided with nine spines in the outer row. 



b. Lower sulcus and inner face of the hind femora largely reddish. Color 

 variable. 

 c. Prevailing color yellowish or flavous, the dorsum of the pronotum and 



abdomen dusky. Head black bilobtis Giglio-Tos. 



cc. Prevailing color variable, but with the dorsum of the pronotum not 



entirely dusky. Head concolorous, or at least not greatly 



varied with fuscous. 



d. General color varying from apple-green to pale brownish olive, 



the dorsum of the pronotum and abdomen varied with fuscous. 



andeanus Bruner. 



