16 1 Mr. T. D. A. Cockerell — Descriptions and 



in nigrifrons, var. a). Wings darker and especially much 

 redder; first r. n. joining second s.m. much nearer base, the 

 distance being hardly half length of first t.-c, and very much 

 less than a third length of s.m. ; area of metathorax longi- 

 tudinally strigose. 



Hob. N.W. Australia (C. F.). Turner Collection, British 

 Museum. 



C. F. is doubtless Charles French, of Melbourne. 



P?-osopis aposuara, sp. n. 



$ . — Length 7 mm. 



Head and thorax black, closely and minutely punctured ; 

 abdomen dark purplish ; head and face ordinary, the latter en- 

 tirely light yellow below the antennae, except the very narrow 

 lower edge of clypeus, but labium and mandibles black ; 

 lateral marks broadly truncate above at level of antenna?, the 

 edge of the tiuncation irregular ; supraclypeal mark long and 

 narrow, with about half its length above the general level of 

 the facial yellow, its upper end truncate but deeply notched 

 in the middle; scape with a yellow stripe; flagelluui dark 

 above, ferruginous beneath ; upper bolder of prothorax with 

 a feeble interrupted yellow line ; tubercles, scutellum, and 

 postscutellum bright chrome-yellow ; area of metathorax 

 longitudinally wiinkhd, and with a strong transverse ridge 

 near the base; tegula? reddish brown. Wings a little dusky 

 toward apex; second s.m. long; first r. n. meeting first t.-c. 

 Legs obscure reddish, anterior and middle tibia? testaceous in 

 front. Abdomen finely punctured. In the table this runs 

 to P. purpurata, from which it is readily known by the pale 

 yellow face and black mandibles, as well as the colour of the 

 legs. To the same place runs P. lubbocki, but this is 

 separated by the colour of the legs, and especially the black 

 hair on the apical part of the abdomen beneath, this place in 

 P. aposuara having exceedingly fine wholly pale hair. It 

 may also be compared with P. chryscgnatha, but that has the 

 face bright yellow, the legs with much yellow, and the 

 abdomen not purplish. The absence of a constriction between 

 the first and second dorsal abdominal segments at once 

 separates it from P. elongata. 



Hub. Mackay, Queensland, at flowers of Xanthorrhma, 

 April 1899 {Turner). British Museum. 



This is the male of Turner's 1047; the females labelled 

 with the same number (Mackay, two May 1900, one Oct. 

 1899, at flowers of Eugenia) agree with P. v. tundiceps, Smith, 

 so far as I can make out. They have the same transverse 



