the Genus Pison. 293 



punctured, the face with golden pubescence, and the ab- 

 domen with golden fasciae. 



Head : the face, as high as the emargination of the 

 eyes, covered with golden pubescence ; the clypeus with 

 an acute tooth in the centre of its anterior margin. 

 Thorax: the collar and mesothorax posteriorly with 

 golden pubescence ; the metathorax with a central longi- 

 tudinal channel, which widens into a deep elongate 

 fossulet down the truncate portion, which is transversely 

 rugose-striate ; the upper portion of the metathorax is 

 obliquely rugose-striate, much more finely so than the 

 truncation ; the tegulae rufo-testaceous ; the wings hya- 

 line, with their apical margins clouded, the nervures 

 black ; the posterior tibiae, the apex of the anterior and 

 posterior pair, and the tarsi, ferruginous. The apical 

 margins of the segments of the abdomen rufo-testaceous, 

 and covered with golden pubescence ; the four apical 

 segments have a changeable thin golden pile. 



Hab . — Australia. 



In F. Smithes collection. 



This species is very like P. tibialis, but it is distinct ; 

 the mesothorax is much more finely punctured ; the 

 metathorax is longer, and so is also the basal segment of 

 the abdomen. 



26. Pison aurifex, n. sp. 



Female. Length 6 lines. Black, opaque, splendidly 

 ornamented with golden pubescence. 



Head : the mandibles and four or five of the basal 

 joints of the antennee ferruginous, the latter more or less 

 dusky above, and the extreme base and apex of the 

 former black; the clypeus and sides of the face as high 

 as the sinus of the eyes clothed with golden pubescence, 

 the cheeks are similarly adorned. Thorax : the collar, 

 the central portion of the posterior margin of the meso- 

 thorax, and the metathorax above, covered with a brilliant 

 changeable golden pubescence ; the pectus and femora 

 also, in certain lights, have a golden effulgence ; the tips 

 of the femora, the tibi^ and tarsi, ferruginous ; the 

 wings subhyaline and iridescent, their apical margins 

 clouded, the nervures testaceous. Abdomen: the apical 

 margins of the segments rufo-testaceous, and covered 



