146 P0MPIL1D.E. 



pressed line from the anterior ocellus to the antennae. The dark 

 wings with a violet iridescence ; the hinder margin of the pro- 

 thorax concavo-truncate, the margin of the truncation slightly ex- 

 cised in the middle ; the third suhmarginal cell much narrowed 

 towards the marginal ; the coxae, trochanters, and the basal half 

 of the femora black, the spines on the legs and calcaria ferrugi- 

 nous. The extreme apex of the abdomen ferruginous. 



Hab. Natal. 



20. Pompilus clotho. 



Female. Length 7 lines. — Black; the abdomen with an obscure 

 blue tinge ; the wings dark brown, with a violet iridescence. The 

 hinder margin of the prothorax rounded; the second and third 

 submarginal cells of equal length, the third much narrower towards 

 the marginal ; the metathorax smooth and concavo-truncate. The 

 abdomen very smooth and slightly shining. 



Hab. Sumatra. 



The three species, P. atropos, P. lachesis, and P. clotho, all from 

 Sumatra, have a close general resemblance, and are nearly all of the 

 same size; the last can at once be distinguished by its truncate 

 metathorax ; P. atropos is distinguished from P. lachesis by its ab- 

 dominal fasciae and by its obliquely-quadrate second submarginal 

 cell. 



21. Pompilus lachesis. 



Female. Length 6| lines. — Black, and with a slight purple bloom 

 in certain lights. The anterior margin of the clypeus rounded. 

 The hinder margin of the prothorax subangular ; the wings fus- 

 cous ; the second and third submarginal cells of about equal length, 

 the second oblong, the third narrowed towards the marginal ; the 

 metathorax smooth and rounded. The abdomen smooth and 

 slightly shining ; the apical segment with cinereous pile, observable 

 in certain lights. 



Male. With a similar bloom to that of the female ; the face below the 

 antennae covered with silvery pile ; the colour of the wings and the 

 neuration is the same as that of the other sex, the hinder wings 

 being also paler than the anterior ones. 



Hab. Sumatra. 



22. Pompilus atropos. 



Female. Length 7 lines. — Black, with a thin cinereous pile ; the 

 basal margins of the segments of the abdomen with indistinct 

 cinereous fasciae ; on the face the pile is bright and silvery, as it is 

 also on the sides of the thorax, the coxae, and femora beneath, in 



