85 



crossed by a semicircular carina and whose apex is divided or 

 forked. Second segment of abdomen over a third the length 

 of that region. Antenna^. 12- jointed, without a ring- joint, the 

 first funicle- joint longest of the funicle, but not as long as the 

 pedicel. Mesoscutum conical caudad, the light parapsidal 

 furrows close together caudad and short, curving off laterad; 

 scutellum with a cross line of fovege at distal third ; pro- 

 podeal spiracle elliptical ; no true lateral carina but several 

 carinas laterad of the spiracle along lateral margin and a short 

 one caudo-mesad of the spiracle from caudad. Thorax with 

 scattered, long, black bristles. Thorax alutaceous, with some 

 punctures in the cross band of black, the propodeum not 

 punctate. Abdominal petiole longitudinally striate. Other- 

 wise like the type species of Urios, but the antennse are in- 

 serted on a line with the ventral ends of the eyes, the scape 

 very long. Mandibles Avith the third tooth obtuse, not broad 

 and truncate. Length, 3'50 mm. 



(S . Not known. 



Described from a female labelled "Rotting leaves." 



Hah. — New South Wales: Ourimbah. 



Type. — I. 1266, South Australian Museum. The above 

 specimen and a head plus a posterior leg in xylol-balsam, one 

 slide. 



Differing from the single North American species of 

 Urios in lacking a ring- joint in the antennae, the propodeal 

 median groove and sulci, the shape of the meso-thoracic 

 sclerites, the lower antenna! insertion, the infuscated wings, 

 and ringed antennae, the slight and short parapsidal furrows. 

 With a distinct lela^Dine habitus. Probably inhabiting the 

 nest of ants. 



ISOPLATINI. 



IsoPLATOiDES, ncw gen. 



9 . With the habitus of the Pteromalince but the 

 median carina and spiracular sulci absent on the propodeum. 

 Head normal, the antennae inserted below the middle of the 

 face but slightly above an imaginary line drawn between the 

 ventral ends of the eyes, 13-jointed, with two ring-joints, the 

 first funicle- joint subquadrate, narrow, and smallest, the 

 second the longest, as long as the pedicel, club short, ovate, 

 slightly wider than the funicle. At least one mandible 

 tridentate, the inner tooth broad. Parapsidal furrows com- 

 plete but shallow ; propodeum short. Wings fasciate, the 

 marginal vein long, the postmarginal also long, three-fourths 

 the length of the marginal and a fourth longer than the long 

 and slender stigmal vein. Abdomen sessile, conic-ovate, flat 

 above, convex beneath, about as long as the head and thorax 



