I'.ki m i< : South American Locusts. 503 



segment. Abdomen carinated, of normal form, its apex reaching 

 slightly beyond the tips of the hind femora. Valves ol the ovipositor 

 moderately slender, the apical portion well curved. Prosternal -pine 

 large and blunt, somewhat transverse, the base subquadrate. Meso- 

 sternal lobes separated bj a space about as broad as long and approxi- 

 mately equal to the lobes themselves. Anterior and middle legs 

 slender, normal; the hind femora robust, the hind tibia? eight-spined 

 externally and decidedly broadened apically with acute margins, as 

 in aberrans Giglio-Tos and siibaquaticus described in the present paper. 



( ieneral color cinereo-ferruginous or brunneo-testaceous, varied 

 with darker and lighter markings. Sides of the head back of the eyes 

 and upper portion of the sides of the pronotum provided with a 

 fairly well-defined brown band in part made up of an agglomeration 

 ol dots and irregular blotches of that color; below this on the pronotum 

 are conspicuous ivory-white patches. Basal abdominal segments 

 conspicuously marked at their sides with piceous patches. Hind 

 femora twice banded both internally and externally with fuscous, 

 most pronounced on the inner face; the lunules of the genicular area 

 black above, lower sulcus flavous; tibiae grayish green, their apex and 

 the tarsi tinged with ferruginous. Antennae ferruginous. 



Length of body, 9, 21 mm., of pronotum, 3.8 mm., of tegmina, 

 2.^ mm., of hind femora, 11 mm. 



Habitat. — The only specimen at hand, the type, which is a female, 

 bears the same label as does the type of P. siibaquaticus described 

 above. 



Although from the same locality and presumably collected some- 

 where near the same date as was the insect described under the 

 name siibaquaticus, it does not seem at all probable that the two 

 insects could be the sexes of a single species. The well marked bands 

 on the hind femora of steinbachi, a female, and the entire absence of 

 them in siibaquaticus, a male, seems to me to be sufficient evidence 

 upon which to separate them, since these marks as a rule are most 

 pronounced in male specimens. 



\2i>. Paradichroplus olivaceus sp. nov. 



A trifle larger than other described species of the genus, a uniformly 

 brownish olive-colored insect of rather robust build. 



Head fully as broad as the front edge of the pronotum; the eyes 

 large and prominent, a little longer than the anterior edge of the 



