1908.] 213 



99. Pronotum a third shorter than mesonotum j black ; mandibles, antennse, coxae, 

 and lege transparent yellbw ; wings hyaline, nervures and stigma very 

 clear yellow 41. pallidinervis, Kieff. 



A. First section of the radius two or three times as long as the second ; third 

 joint of antennas at most two and a half times as long as thick. 



a Head with one or three frontal ridges ; scape longer than third joint. 



x. Metathorax truncate with a curved cross ridge, dividing the horizontal and 

 steep part ; head dull and coriaceous 0- vicinus. 



xx. Metathorax with one or three arese. 



s. Parapsidal furrows well marked in front. 



o. Flagellum beneath, scape, coxae, and legs red 42. flavinervis, Kieff. 



00. Antennae black ; the four hind legs mainly dark 23. obscuricornis, 



B8. Parapsidal furrows wanting, or barely traceable 43. parvus; Kieff. 



aa. Head without frontal ridge, but usually with a frontal impression in the form 



of a line. 



r. Scape a little shorter than the third joint 44. nitidellus, Kieff. 



rr. Scape as long as the third joint. 



c. Head almost smooth, shining, indistinctly shagreened or punctured ; meta- 

 thorax without well-defined area 45. fuscoclavatus, Kieff. 



cc. Head distinctly, densely, and finely punctured ; metathorax with three areas, 

 as dull and rugose as the adjoining parts ; funiculus slighter than two 

 basal joints of antennae 46. JUicornis, Kieff. 



rrr. Scape distinctly longer than the third joint. 



f. Metathorax gradually sloping with a triangular area : that is to say, closed 



above by a straight line 47. triangularis, Kieff. 



ff. Metathorax with a median area curved above, or without an area. 



g. Antennae beneath, base of scape and of joints, yellow ; legs yellow, except 



part of femora and hind tibiae 48. ellimani, Chitty . 



gg. Antennae and legs entirely pale yellow 49. x a ntho stigma, Kieff. 



ggg. Antennae black or brown-black. 



h. Metathorax without a well-marked area. 



i. Metathorax truncate ; area badly defined ; head shagreened ; third joint of 

 antennae half as long again as thick ; parapsidal furrows indicated by 

 traces or wanting 50. indivisus, Kieff. 



ii. Metathorax gradually sloping, without an area. 



j. Head shining, with a puncturation neither close nor distinct; third joint of 

 antennae two and a half times as long as thick ; parapsidal furrows dis- 

 tinct in type, wanting in variety 51 . divisus, Kieff. 



jj. Head shining and very distinctly punctured ..52. breviventralis, Chitty. 



hh. Metathorax with one or three well-defined areae. 



k. Metathorax with one well-marked area. 



1. Legs, without, coxae, yellow or testaceous, the posterior sometimes a little 



brown. 



m. Coxae black, except at apices 53. trividlis, Kieff. 



mm. Coxa? and scape entirely yellow 54. jiaviscapus, var., Kieff. 



