88 Mr. R. E. Turner on Fossorial Ilymenoptera. 



scape ; posterior ocelli more than half as far again from the 

 eyes as from each other, a little nearer to the posterior 

 margin of the head than to the eyes ; a broad oblique de- 

 pression from the inner margin of the eyes not reaching the 

 posterior ocelli. Front strongly concave and shining, the 

 rest of the head and thorax subopaque. Pronotum trans- 

 verse, with a distinct dorsal surface, the angles well defined, 

 not rounded, without a sulcus. Mesonotum without a 

 sulcus ; a narrow, transverse, crenulated line at the base of 

 the median segment, the triangular area of the median 

 segment well defined and divided by a longitudinal sulcus. 

 First abdominal segment nearly half as long again as the 

 second, a little swollen at the apex, the second segment 

 about three times as wide at the apex as the first. Fifth 

 dorsal segment thickly clothed with very delicate golden- 

 brown pubescence ; ])ygidial area sparsely punctured at the 

 base, smooth at the apex. Recurrent nervure received 

 beyond three-quarters from the base of the cubital cell, at 

 a distance from the apex scarcely exceeding the length of 

 the transverse cubital nervure. Hind tibiae swollen on the 

 apical half, strongly spinose. 



(J . As in the female ; but the depressions on the inner 

 margin of the eyes are much smaller, and the second abdo- 

 minal segment is distinctly longer and more slender in 

 proportion to the first. 



Hub. Yallingup, S.W. Australia ; October and November. 

 Warren River, S.W. Australia {W. D. Dodd). 



I took the male in some numl^ers on Leplospermum blossom, 

 but the only female was taken from an Asilid fly. Mr. Dodd 

 took two females on the Warren River, but no males. 



Rhopahim cygnorum, sp. n. 



$ , Nigra ; scapo, femoribus, tibiis tarsisque anticis, fcmoribus 

 tibiisqiie intevmediis subtas, tarsis iiitermecliis, tuberculisque 

 humeralibus flavis ; alls hyalinis, iridesceutibus, venia nigris ; 

 flagello subtus brunneo. 



Long. 5 mm. 



$ . Eyes separated from each other at the base of the 

 clypeus by a distance nearly equal to half the length of the 

 scape ; posterior ocelli far apart, farther from each other 

 than from the eyes or from the posterior margin of the head ; 

 a Utirrow oblique sulcus running from the inner margin of 

 the eyes to the posterior ocelli. Head finely and closely 

 punctured ; thorax shining, almost smooth. Pronotum 

 transverse, with a distinct dorsal surface, the angles well 



