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Thorax with very distinct, and not very sparse, clothing of 

 fuscous or brown tomentum, pleura and metanotum with grey; 

 marginal series of black bristles on the scutellum quite well de- 

 veloped; halteres dark at base, and sometimes also infuscate 

 apically. Wings in the male rather lightly infuscate, clear in 

 the female, the stigma shorter than the long fourth costal seg- 

 ment, small cross-vein nearly opposite termination of auxiliary, 

 and considerably before the middle of the discal cell; posterior 

 cross-vein very oblique. Legs with the coxae dark, the troch- 

 anters, base of femora widely and the apex more narrowly, the 

 whole of the tibiae and sometimes nearly the whole of the tarsi, 

 yellow, but the latter sometimes dark or obscured above; pos- 

 terior femora banded with black or fuscous on the apical half. 



Abdomen in the male black and shining towards the apex, fus- 

 cous-blackish on the second and following segments; in some 

 aspects nearly entirely shining and slightly aeneous, clothed with 

 quite distinct, but sparse hairs; basal segment banded with grey 

 tomentum, the black lateral bristles well developed. Abdomen 

 of the female with the surface densely covered with fuscous 

 tomentum, sometimes paler along the apical margins of the seg 

 ments. as also on the basal one, and quite conspicuously pilose; 

 ovipositor straight, pale, of moderate length and thickness. 

 Length 2.75-4 mm. 



HAB. Kauai in the cane fields; but only found bv Mr. F. W. 

 Terry in one locality. It is closely allied to P. jnvator, but most 

 decidedly a distinct species. 



30. P. swescyi, sp. nov. 



Male; front and face with whitish tomentum; third joint of the 

 antennae acuminate and produced at apex, yellow. 



Thorax somewhat shining, sparsely clothed with fuscous 

 tomentum, the pleura and metanotum with grey; scutellum with 

 longish marginal series of bristles; halteres pale, more or less 

 infuscate at base and apex; wings smoky, stigma brown and 

 about as long as the fourth costal segment; small cross- vein 

 nearly opposite (a little beyond) the termination of the auxiliary; 

 posterior cross-vein very oblique, its upper extremity a'bout op- 

 posite the termination of the second longitudinal; legs with the 

 coxae 'and apical joint of the tarsi black, all the rest clear yellow, 

 the small spines beneath the femora, the hairs on these and on 

 the tibiae and tarsi, black. 



Abdomen nigroaeneous, and rather shining, with sparse and 



