Hymenoptera in the British Museum. 69 



2. Psammochares atavus, Turn. 



Anojplius atavus, Turn., Proc. Zool. Soc. London, p. 326, 

 1910, ?. 



Hab. N.W. Australia. 



3. Psammochares ahrimanes. Turn. 



Anoplius ahrimanes, Turn., Proc. Zool. Soc. London, p. 326, 

 1910, ?. 



Hab. N. Queensland. 



4. Psammochares pluto, sp. n. 



$. Nigra; alis nigro-violaceis ; flagello subtus fusco; unguiculis 

 unidentatis. 



(J. Feminae simillimus ; scapo subtus bruneo, orbitis intemis 

 anguste flavis; unguiculis unidentatis. 



Long. 9, 17 mm. ; (^, 14 mm. 



$• Clypeus broadly truncate at the apex, the labrum not exposed ; 

 second joint of the flagellum as long as the first and third combined, 

 the third distinctly longer than the fourth. Eyes slightly divergent 

 towards the clypeus, separated on the vertex by a distance equal 

 to the length of the third joint of the flagellum. Pronotum shorter 

 than the mesonotum, the posterior margin broadly arched, without 

 a distinct angle ; scutellum narrowly truncate at the apex. Median 

 segment broader than long, without tubercles, rounded at the 

 posterior angles, gradually sloped posteriorly, with a deep median 

 sulcus from the base. Abdomen opaque, with a few long black 

 hairs on the sides near the apex; sixth dorsal segment rather 

 broadly rounded at the apex and sparsely clothed with long black 

 setae. Basal joint of fore tarsus with three moderately long spines 

 on the outer margin, hind tibiae spinose, tarsal ungues with one 

 tooth. Third abscissa of the radius a little longer than the first, 

 and more than two-thirds of the length of the second, submedian 

 cell equal in length to the median, second recurrent nervure received 

 beyond the middle of the third cubital cell, cubitus of the hind- wing 

 interstitial with the transverse median nervure. 



^. Antennae not stout, the joints very slightly arcuate beneath, 

 gfecond joint of the flagellum scarcely longer than the third. Clypeus 

 widely emarginate at the apex, the labrum exposed in the arch of 

 the emargination. Median segment as long as broad, without a 



