128 HYMENOPTERA ACULEATA. 



(50) 49. Third abdominal eegment entirely 



black, rarely with a very small 



yellow spot in the ? (Subg. 



Solcnius, hep.) .... vagus. 

 (49) 50. Third abdominal segment spotted 



(Subg. Crabi-o, Dhlb.— gen.). 

 (54) 51. (J antenna3 simple, pubescence of 



clypens in the $ silvery. 

 (53) 52. Mesonotum transversely striate 



in front, the strise not interrujited 



in the centre .... interruptus. 



(52) 53. Mesonotnm punctured in the centre 



anteriorly litukatus. 



(51) 54. (J antennae dentate, pubescence of 



clypens in ? golden (Subg. Clyto- 



rh.rysus, Mor., pars.) . . . ctlRTSosTOMUS. 

 (42) 55. Abdomen strongly punctured (Subg. 



Thyreus, Lep.) .... clypeatus. 

 (41) 56. Abdomen entirely black or bronzy 



(Snbg. Lindenins, Lep.). 

 (58) 57. Abdomen bronzy-black, head not 



wider than the mesonotnm . . albilabbis. 

 (57) 58. Abdomen black, not bronzy, head 



wider than the mesonotum . . Panzeri. 



(Subg. RHOPALUM.) 



C. tibialis, Fabr. — Black, head and mesonotum shininpf, 

 finely and rather remotely punctured, face between the 

 antennas with a blunt spine ; ^ with the scape of the antennas, 

 the basal points of the flagellum beneath, the whole of 

 seventh, ninth, and eleventh joints, white, second joint 

 transverse and laterally produced, third and fourth sinuate 

 at the base, and much widened at the apex, 9 with the 

 antennas simple, the scape and underside piceous, mandibles 

 yellow at the apex in the S , piceous in the ? ; thorax with 

 the teguloe and tubercles pale, propodeum shining at the 

 base, with a central impressed line, its sides clothed with 

 white pubescence, basal area not defined laterally ; abdo- 

 men shining, basal segment narrow and very clavate pos- 

 teriorly, apical dorsal valve in the ? carinated at the sides and 

 clothed with erect hairs, its apex testaceous ; legs with the 

 apices of the femora, the whole of the front tibias and the 



