Ill POMriLlTI.K. 



propsod lino from the imlcrior dccUns (o tlio antonn.T. The dark 

 win-;s witli ii violet iridi-sceiur ; the hinder marpn of the pro- 

 thorax conoavo-inmcato, the margin of the tnincation slij^'htly cx- 

 eised in the middle ; the third suhmarpnal cell much narrowed 

 towards the mar-jinal ; the coxa>, trochanters, and the hasal half 

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

 nous. The extreme apex of the ahdomen ferruginous. 



Hah. Natal. 



20, Pompilus clotho. 



Fi-mnlc. Length 7 lines. — Black ; the ahdomen with an ohscnre 

 hluc tinge ; the wings dark hrown, with a violet iridescence. The 

 hinder margin of the prothorax rounded ; the second and third 

 sulnnarginal cells of equal length, the third much narrower towards 

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

 abdomen very smooth and slightly shining. 



Hah. Sumatra. 



The three species, P. atropos, P. lacJiesis, 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. atvopos is distinguished fi-om /-•. lachesis' by its ab- 

 dominal fasciffi and by its obliquely-quadrate second submarginal 

 cell. 



21. Pompilus lachesis. 



Female. Length Gi 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 ; tho 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. 



Ilab. 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 fasci?e ; on the face the pOe is bright and silvery, as it is 

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



