294 Mr. F. Smith on 



with a brilliant golden pile, the entire abdomen, in cer- 

 tain lights, has a golden lustre. 



The male resembles the female ; the clypeus has a 

 central tooth on its anterior margin. 



Hah. — Australia. 



In F. Smith's collection. 



27. Piso7i separatus, n. sp. 



Male. Length 4 lines. Black, punctured, the meta- 

 thorax not striate, abdomen with silver fasciaj. 



Head finely and closely punctured, opaque; the cly- 

 peus with a central tooth on its anterior margin, the face 

 with silvery pubescence as high as the sinus of the eyes ; 

 tips of the mandibles rufo-piceous, the palpi rufo-testa- 

 ceous. Thorax slightly shining, closely and rather finely 

 punctured; the metathorax with a central longitudinal 

 channel, the upper portion of which has a slight carina ; 

 the collar and sides with short sparing silvery pubes- 

 cence ; the wings smoky and iridescent ; the tarsi 

 obscurely rufescent. Abdomen shining, very finely and 

 closely punctured ; the apical margins of the segments 

 depressed, and with silvery fasciae. 



Hab. — Western Australia (Champion Bay). 

 In the British Museum. 



28. Pison fuscipennis, n. sp. 



Female. Length 7 lines. Black, slightly shining, 

 adorned with silvery spots and bands. 



Head : the face covered with bright silvery pile, the 

 cheeks with a similar brilliant clothing. Thorax: the 

 collar, sides of the mesothorax, of the metathorax, as 

 well as the pectus, with a bright changeable silvery pile; 

 the mesothorax above, and the scutellum, finely and 

 closely punctured; the anterior wings, excepting their 

 base, and the apex of the posterior pair, fuscous ; a semi- 

 transparent nebula crosses the anterior wings a little beyond 

 the second submarginal cell ; the metathorax obliquely 

 and finely rugulose above, and transversely and coarsely 

 striate behind. Abdomen: all the segments with bril- 

 liant silvery fasciee on their apical margins ; beneath, 

 shining and delicately punctured. 



