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widely emarginate obtuse-angularly at base, 3-carinate, lateral 

 keels arising at the apical margin close to the eyes, diverging 

 slightly almost to posterior margin, and ending just before it, a 

 trifle anterior to this, they are carried on laterally under the 

 eyes by a series of small, raised pustules. Scutellum longer 

 than the pronotum, 3-carinate, tihe middle keel entire, lateral 

 margins of posterior prolongation straig'ht. Anterior and in- 

 termediate legs simple, not dilated. Posterior tibiae longer 

 than tarsi with 2 lateral and 4 apical spines; first tarsal segment 

 .longer than the others together. Tibial spur three-fourths of 

 the length of the tibia, with about 40 spinelets. Species dimor- 

 p'hic or monomorphic. 



1. ^^>ons more or less uniformly pale brownis'h, with trans- 

 verse whitish dots both basally and apically. (Male with 

 subcostal, median and apical cells, dark smoky. Female 

 narrowly suffused 'by smoky on each side of 2nd-5th apical 

 veins.) 4 vastatrix (Breddin). 



I a. Frons basally dark brown, apically whitish, the former only 

 wit'h transverse whitish dots 2. 



2. Males (all longwinged)* 7 



2a. Females 5. 



3. Scutellum laterally broadly dark brown 



I saccharicida Kirkaldy. 



3a. Scutellum concolorous 4. 



4. Antennae shorter, granulations stronger and dark 



2 graminicida sp. nov. 



4a. Anterior longer, granulations feebler and paler 



3 vifieiisis sp. nov. 



5. Longwinged forms 7- 



6. Tegmina almost immaculate, some of the apical veins 

 lightly suffusedly infuscate 3 vitioisis sp. nov. 



6a. Median cell sometimes smoky, also 5th and 6th apical 



cells (except small hyaline spots at apex) 



I saccharicida Kirkaldy. 



7. Antennae longer and stouter, tegminal granules com- 

 paratively feeble and paler i saccharicida Kirkaldy. 



7a. Antennae shorter and less stout, tegminal granules 

 darker 2 graminicida sp. nov. 



* Since this was in pioof. Mr. Muir has written from \Mti that P. -I'itiensis is diiiiDV- 

 phic in both sexes. 



