22f) roiiMiciD.i:. 



by about one-lifth (.f its own [p. 2o6. 



length 1'. juriDida, 



i". Scapi' of antenna' shorter, 

 fallinfr short of apex of 

 lateral lobe of head by more 

 tlian half its own len;ith . . P.jacuita, p. -l^^'l. 

 b^. Pronotum convex, lateral tubercles 

 sometimes obtuse but always dis- 

 tinct, 

 o' Second node of pedicel distinctly 

 more than half tiie breadth of 

 abdomen. 



a^^\ Head longer than broad P. Jiorni, p. '2'A. 



6'". Head as broad as long- I\ rhombinoda, 



b". Second node of pedicel not nearly [p. 250. 



half the breadth of abdomen. 

 «"'. Clypeus medially produced, bi- [p. 258. 



dentate P. per/ueiisis, 



6'". Clypeus not medially produced 

 nor dentate. 

 «". Abdomen sculptured. 

 «'"-. Basal third of abdomen [p. 253. 



tinely striate P. Kfn'aiiveiitris, 



i'"'. Entire abdomen (sometimes 

 only basal two-thirds) re- 

 ticuhite - punctate, not 



striate P. (jhatica, p. 254. 



i''. Abdomen not sculptured, 

 smooth and shining. 

 a^-. Longitudinal strii'e on head 

 curving outwards on pos- 

 terior lateral lobes. 

 a^'^. Pronotum highly polished, [p. 255. 



smooth and shining .... P. sepulchralis, 

 b^\ Pronotum more or less 

 transversely striate. 

 «". Frontal grooves for re- 

 ception of scape longi- [p. 2()1. 

 tudiually striate within. P. plai/iarin, 

 i". Frontal grooves for re- 

 ception of scape tinely 

 reticulate Avithin. 

 a^'. Second node of pedicel 



transverse, with acute [p. 2(51. 



lateral cones P. binf/hami, 



b^'". Second node of pedicel 

 more rounded, the 

 lateral angles more 



obtuse P. indicu, \^. 2G3. 



i^^. Longitudinal striae on head 

 not curving outwards on 

 posterior lateral lobes. 



«'■'. Length under 3 nnn P. 7-oi/crsi, p. 258. 



b'^'. Length over 3 mm. 

 rt^'. Head long, half as long [p. 255. 



again as broad P. vuKjretti, 



