474 Annals of the Carnegie Museum. 



above by a space little greater than the longest diameter of one of 

 the eyes; fastigium of the vertex rugoso-punctate, depressed, with a 

 longitudinal medianal sulcus or depression bordered by inconspicuous 

 antero-lateral carina?, which meet in an obtuse angle slightly above the 

 base of the antennae; frontal costa fiat, narrowing and fading below 

 the ocellus, where its presence is indicated by a rounded ridge to the 

 base of the clypeus. Lateral or facial carinae not especially promi- 

 nent, somewhat sinuose, but not divergent towards the lower corners 

 of the front. Antennae filiform, gently surpassing the hind margin of 

 the pronotum. The latter rugoso-punctate, more or less compressed 

 laterally, tectate; viewed in profile the crest gently arcuate and cut 

 into about a dozen teeth; transverse sulci profound, the last situated 

 somewhat in advance of the middle; the anterior middle somewhat 

 obtuse-angulately advanced upon the occiput, the hind margin acute- 

 angled. Tegmina and wings only gently passing the tip of the 

 abdomen in both sexes. Legs normal. Hind tibial spines small, ten 

 to eleven on the outer margin. Prosternal spine of moderate size, 

 compressed, acuminate, directed gently to the rear. 



General color of legs and body greenish yellow varied with brown. 

 Pronotum conspicuously bordered with a series of roundish black 

 spots, the disk brownish, and more or less regularly marked with 

 similar spots; teeth of the crest likewise black. Tegmina fuscous, 

 showing a tendency to transverse maculation, owing to the presence or 

 absence of pale transverse nervures. Hind femora marked with black 

 lunules and a narrow pregenicular transverse band, which is slightly 

 interrupted above. Hind tibiae flavous above, and gradually changing 

 externally to gray lead-color and black, which is the tint of the inner 

 side; the tarsi grayish above, pallid below. Antennae brownish fer- 

 ruginous. Eyes varying from flavous to castaneous. 



Length of body, cf\ 41 mm., 9 , 46 mm.; of pronotum, c? 1 , 8 mm., 

 9, 10 mm.; of tegmina, cf, 34 mm., 9, 38 mm.; of hind femora, 

 o 71 , 19 mm., 9,21 mm. 



Habitat. — Santa Cruz de la Sierra, Bolivia, at an elevation of 450 

 meters (J. Steinbach, collector). 



81. Prionacris coerulescens Bolivar? 

 Prionacris ccerulescens Bolivar, Anal. Soc. Espafi., XIX, p. 319 (1890). 



Habitat. — A single female specimen from the " Provincia del Sara, 

 Bolivia," is referred with some doubt to Bolivar's species. It was 



