220 FOBMICID.T:. 



by about one-fifth of its own [p. 256. 



length P- jucunda. 



A 11 . Scape of antennae shorter, 

 falling: short of apex of 

 lateral lobe of head by more 

 than half its own length . . P.jattma, p. '262. 

 > s . Pronotum convex, lateral tubercles 

 sometimes obtuse but always dis- 

 tinct. 



9 Second node of pedicel distinctly 

 more than half the breadth of 

 abdomen. 



a 10 . Head longer than broad P. horni, p. 251. 



b w . Head as broad as long P. rhombinoda, 



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



half the breadth of abdomen. 

 a 10 . Clypeus medially produced, bi- [p. 258. 



dentate P. peyuensis, 



b 10 . Clypeus not medially produced 



nor dentate. 



a 11 . Abdomen sculptured. 

 12 . Basal third of abdomen [p. 253. 



finely striate P. striativentris, 



6 12 . Entire" abdomen (sometimes 

 only basal two-thirds) re- 

 ticulate - punctate, not 



striate P. yhatica, p. 254. 



6 11 . Abdomen not sculptured, 



smooth and shining. 

 a 1 -. Longitudinal striae on head 

 curving outwards on pos- 

 terior lateral lobes. 

 a 13 . Pronotum highly polished, [p. 255. 



smooth and shining .... P. sepulchralis, 

 b 13 . Pronotum more or less 



transversely striate. 

 u . Frontal grooves for re- 

 ception of scape longi- [p. 261. 

 tudinally striate within. P. playiaria, 

 b u . Frontal grooves for re- 

 ception of scape finely 

 reticulate within. 

 a 15 . Second node of pedicel 



transverse, with acute [p. 261. 



lateral cones P. binyhaini, 



b 13 . Second node of pedicel 

 more rounded, the 

 lateral angles more 



obtuse ..:... P. indica, p. 263. 



i 12 . Longitudinal striae on head 

 not curving outwards on 

 posterior lateral lobes. 



a 13 . Length under 3 mm P. royersi, p. 258. 



6 13 . Length over 3 mm. 



u . Head long, half as long [p. 255. 



again as broad P. mayretti, 



