72 Annals of the Carnegie Museum. 



The remarks offered by me, /. c, p. 91, will give the reader such 

 meager information as we possess concerning these apparently rare 

 locusts. Since that paper appeared Rehn has described the species 

 falcifer, and now there seems to be still another represented by a 

 single male from eastern Bolivia. The table used for the separation 

 of the four species including the two described by me in the Annals 

 (/. c, pp. 91-94) may be modified so as to include both falcifer Rehn 

 and the new one now at hand. It follows: 



Synopsis of the Species of Bucephalacris. 



A. Form rather graceful, cylindrical, or subcylindrical. Tegmina and wings a 



little shorter than the abdomen; the former with comparatively few 



veins. Hind tibiae glaucous. 



b. General color olivaceous, the tegmina tinged with rose or vinaceous. 



Size smaller id', ?; 9, 23-25 mm.). 



c. Head large and decidedly wider than the front edge of the pro- 



notum borellii Giglio-Tos. 



cc. Head smaller, but little wider than the front edge of the pronotum. 



fuscipennis Brunner. 

 bb. General color dull grayish brown, the tegmina not tinted with rose or 

 vinaceous. 

 c. Size larger ( 9 , 30 mm.). Hind femora provided with three fuscous 

 bands, inner face and lower sulcus of the femora blood-red. 



paraguayensis Bruner. 

 cc. Size smaller (d^, 20 mm.). Hind femora provided with two dim 

 fuscous bands, their inner face and lower sulcus fiavous. 



boUviana sp. nov. 



AA. Form rather robust. Tegmina considerably shorter than the abdomen; the 



former rather closely veined. Hind tibiee coral-red. 



b. Head about as wide as high. Upper lateral edges of the pronotum 



conspicuously banded lengthwise with fuscous. Length of the body 



greater ( 9 , 28.5 mm.) corallipes Bruner. 



bb. Head higher than wide. Upper lateral edges of the pronotum not 

 conspicuously banded lengthwise with fuscous. Length of the body 

 less id, 17.6 mm.; 9 ■ 25.8 mm falcifer Rehn. 



122. Bucephalacris boliviana sp. nov. 



A medium-sized insect which is possibly most nearly related to the 

 species B. paraguayensis Bruner and B. borellii Giglio-Tos. 



Head large, decidedly wider than the anterior edge of the pronotum, 

 the occiput short, bullate; the eyes very large and prominent, fully 

 twice as long as the anterior edge of the cheeks, separated above at the 



