50 Mr. H. E. Turner on Fossorial Ilymenoptera. 



thickness throughout. Head and thorax finely and closely 

 punctured^ the abdomen more sparsely punctured, pubescence 

 greyish and short. Pronotum broadly emarginate on the 

 anterior margin ; scutellum moderately convex ; median 

 segment steeply sloped posteriorly, but not truncate. Abdo- 

 men narrow, the segments strongly constricted at the base ; 

 sixth ventral segment with a spine on each side at the apical 

 angles ; hypopygium ending in three long slender spines, 

 the median spine nearly twice as long as the lateral ones. 

 Second abscissa o£ the radius longer than the third by about 

 one-quarter ; first recurrent nervure received by the second 

 cubital cell a little beyond two-thirds from the base, second 

 received by the third cubital cell at about one-tenth from 

 the base ; the division of the first cubital cell by the branch 

 nervure represented by a scar only, 



Hab. Hermannsburg, Central Australia [H. J. Hillier). 



Thynnoturneria centralis, sp. n. 



6 . Niger ; mandibulis basi, clypeo lateribus, maculis duabus supra 

 antennas, pronoto marginibus, postscutello, mesopleuris macula 

 antics, segmento mediano macula apicali utrinque, segmentis 

 dorsalibus 1-4 macula obliqua utrinque pallide flavis ; mesouoto, 

 scutello, mesopleuris segmentisque abdominalibus 5-7 rufo- 

 ferrugineis ; pedibus fusco-ferrugineis, flavo-variegatis ; alis 

 hyalinis, venia fuscis, stigmate fcrrugineo. 



Long. 9 mm, 



Clypeus convex, as long as the greatest breadth, truncate 

 at the apex, connected by a narrow carina with the inter- 

 antennal prominence, which is not strongly raised. Head 

 thin, finely and closely punctured ; antennce as long as the 

 thorax without the median segment, of even thickness 

 throughout. Anterior margin of the pronotum straight, 

 not emarginate. Thorax and abdomen more sparsely punc- 

 tured than the head, the sides of the scutellum smooth 

 and shining. Scutellum rather broadly truncate at the 

 apex, with a depressed transverse line at the base. Median 

 segment rather short, sloped posteriorly, not truncate. 

 Abdominal segments narrower than the thorax, strongly con- 

 stricted at the base ; a short spine on each side at the apical 

 angles of the sixth ventral segment; hypopygium with three 

 spines, the apical one much longer than the lateral, which 

 are short and slight. Second abscissa of the radius longer 

 than the third; first recurrent nervure received at three- 

 fifths from the base of the second cubital cell, second at 

 one-sixth from the base of the third cubital cell. 



Hab. Hermannsburg, Central Australia {H. J. Hillier^. 



