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the face and front being covered with glistening white tomen- 

 tum, antennae with the third joint strongly and very sharply, 

 acuminately produced, its colour piceous or obscurely pale. 



Mesonotum covered with fuscous tomentum, at the sides in 

 front (more or less) and the pleura and metanotum with whitish 

 grey; scutellum with some very short and indistinct hairs; hal- 

 teres pale, dark at base. Wings nearly clear, third costal seg- 

 ment generally distinctly longer than the fourth, but a little 

 variable; small cross-vein rather beyond the apex of the auxil- 

 iary; posterior cross-vein very oblique, its upper extremity be- 

 yond the apex of the second longitudinal; stigma pale brown. 

 Legs dark, the knees and tarsi (except the apical joint) yellow, 

 the tibiae largely dark or brown. 



Abdomen with dark fuscous tomentum, and lateral spots of 

 greyish white, the basal segment with a lateral line of distinct 

 'black bristles, and with a band of whitish tomentum; ovipositor 

 straight, longer and slenderer than in most Australian species. 

 Length 2 . 5-3 mm. 



HAB. Cairns district, with the two preceding. Without 

 doubt it is the female sex of one of these, but as it dififers in im- 

 portant characters from both, and it is impossible to associate 

 it specially with either, I have temporarily given it another 

 name. 



10. P. cinerasccns, sp. nov. 



Head in front, and the face covered with dense glistening 

 whitish tomentum; posteriorly at the sides with whitish, in the 

 middle with darker grey. In the female the dense tomentum of 

 the face extends back to the ocelli. Third joint of the antennae 

 yellow, and very strongly acuminately produced at the apex. 



Thorax with slate-coloured tomentum; in front laterally, the 

 pleura and the metanotum with whitish; the scutellum with 

 some very fine, short and inconspicuous hairs; halteres yellow, 

 dark at base. Wings extremely clear, neuration dark, stigma 

 pale brown, third costal segment much longer than the fourth, 

 upper extremity of the posterior cross-vein about opposite the 

 apex of the second longitudinal. Legs black, femora and tibiae 

 with pale tomentum, knee-joints and tarsi (except the apical 

 joint) yellow, tibiae largely brownish or darkened. 



Abdomen nearly uniformly covered with whitish slate-colour- 

 ed tomentum, the basal segment with a line on each side of 

 several longish and distinct black bristles; hypopygium of male 



