598 



>in. K. E. TCKXER ON 



Puucturatiou of the mesouotiun not obsolete; pos- 

 terior ocelli nearer to each other than to the eyes, 

 separated from the eyes by a distance considerably 



exceeding their own diameter 35 



35. Mesonotiim very finely punctured; second "abscissa 

 ot the radms no longer than the petiole of the 



second cubital cell P. congener Tnvn. 



Mesonotum more strongly punctured; second ab- 

 scissa of the radius half as long again as the 



o« a, petiole of the second cubital cell P. scabrum Tarn. 



db. X wo basal segments ot abdomen ferruginous p basalis Sm 



feecond abdominal segment black ; the apical margin 



sometimes brown 07 



37. Basal segment of abdomen black ; the apical margin 



sometimes brown 00 



Basal segment of abdomen ferruginous, with a littie 



black at the base ^g 



38. Tibue and tarsi black or piceous 39' 



Tibiffi and tarsi ferruginous 42' 



39. Abdomen covered with golden pubescence, "denser oii 



the apical fasciae than elsewhere ; pubescence of 



the front golden ; tibiaj and tarsi black P. auriventre Turn. 



iubescence ot the abdomen confined to the apical 

 fasciaj ; pubescence of the front silver ; tibite and 

 tarsi more or less piceous 49 



40. Abdominal fascire dull whitish or dull pale fulvous '• 



second joint of flagellum no longer than the third.' 41 



Abdominal fasciae shining golden; second joint of 



tl'e flagellum much longer than the third p. vestitus Sm. 



41. i-unctures ot the median segment very close, mingled 



with very fine indistinct oblique striae !. ... P. marginatus Sm. 



Junctures ot the median segment sparser and not 



4:i. Antennas wholly black 43 



Basal joints of the antennae ferruginous 45 



43. Trochanters and femora wholly ferruginous';" length 



m„, '. ■" ;'i" V ■',■. p. inconspictiurn Tarn. 



iiochanters black, femora ferruginous at the apex 



only ; length at least 8 mm 44 



44. Posterior ocelli in the female separated from the 



eyes by a distance about equal to their own dia- 

 meter, in the male by a distance equal to nearly 



twice their ovvn diameter P.iiblalisSm. 



1 ostenor ocelli 111 the female separated from the eyes 

 by a distance scarcely exceeding iialf of their own 

 diameter, in the male by a distance about equal to 

 their own diameter P. frateroian.s Tmn. 



4.0. feecond dorsal segment with a brown chitiiious apical 



band, clothed with golden or whitish pubescence.. 46 



hecond dorsal segment entirely black, without a 



i« T./'V*^>"O^J^ 0'- pubescent apical band P.pulchrinum Turn. 



4e>. Median segment, especially at the apex, densely 

 clothed with golden pubescence ; first abdominal 

 segment elongate, scarcely broader at the apex 



J .'"^ *^^ ^^^^ °f the median segment P. aiirifex Sm 



Median segment without dense pubescence, the 

 pubescence, if any, not golden ; first abdominal 

 segment much broader at the apex than the base 

 of the median segment, not elongate 47. 



47. Pubescence of abdominal fasciae golden ; length of 



male over 9 mm. .... P . meridionale Tm-n. 



i'ubescence of abdominal fasciae whitish ; length of 



.„ «"'*'fl"™ P.decipiens^m. 



48. >'5econd dorsal segment with a broad chitinous ferru- 



ginous band at the apex, the band clothed with 



golden pubescence 49. 



Second dorsal segment entirely black, without goldeii 



pubescence ' 5q_ 



