256 Records of the S.A, Museum 



narrow dark brown longitudinal stripes ; wings dark brown ; a whitish-subhyaline 

 area in the outer end of cell M that splits into three rays at cell first M^, one 

 going to eosta in eell W, one to the wing-tip in cell RS, the third to the posterior 

 margin in cell M^; lateral margins of the abdominal tergites dark brown. 



$ Length, 26-30 mm.; wing, 25-27 mm.; abdomen alone, 17-21 ram. 



Frontal prolongation of the head reddish; palpi dark brown. Antennae 

 with the seapal segments reddish, the flagellum dark brown; first flagellar 

 .segment produced strongly ventrad at apex ; pectinations of flagellar segments 

 two to seven about one-half longer than the segments. Head reddish-purple, the 

 anterior portion of the vertex and a broad margin adjoining the eyes light grey. 

 Pronotum light grey, einnamon-brown medially. Mesonotal praescutum dark 

 grey with four rather narrow dull violaceous stripes, the intermediate pair 

 separated by a narrow line of the ground-colour ; scutum grey, the lobes largely 

 dull violaceous ; a narrow dark chestnut band extends from each wing-root across 

 the posterior part of the scntelluni ; postnotum pale grey pruinose. the posterior 

 margin of the median sclerite and the ventral half of the lateral sclerites above 

 the halteres chestnut. Pleura and .sternum with a light grey silky bloom, with 

 three more or less evanescent narrow chestnut-brown longitudinal stripes, the 

 most dorsal one occupying the dorso-pleural membranes; the second, broadest, 

 extending from the ventral ends of the propleura above the fore coxae to the 

 base of the halteres; the most ventral stripe occupying the mesosternum ; the 

 area between the ventral and intermediate stripes is broader than the latter; 

 these dark stripes are best seen when the insect is viewed from before; vieAved 

 from behind they are quite invisible. Halteres brown, the knobs obscure brownish- 

 yellow. Legs with the coxae reddish, light grey pruinose; trochanters dark 

 reddish-brown ; femora reddish, the tips indistinctly darkened ; tibiae obscure 

 brownish-yellow, darkened apically, the extreme tips indistinctly inf uscated ; tarsi 

 brown. Wings dark brown, the costal and subcostal cells more yellowish-brown ; 

 cells Cu, first A and second A more greyish,, subhyaline basally; a large oval 

 whitish-subhyaline area in cell R before the origin of Rs ; a large blotch occupying 

 the outer half of cell M, passing through cell first M- and there splitting into 

 three rays, the first narrow, traversing the bases of cells R^ and R^ ; the second 

 including most of cell R^ and the extreme tip of R^, the third including the base 

 of cell second M^ and all of M'* except the anterior outer angle; thus there 

 appears an outer longitudinal white stripe, crossed by an arcuate similar band 

 that extends from margin to margin ; cell Cu' grey, the surrounding veins heavily 

 margined with dark brown. Wings broader than in P. gracilis. Venation : Cell 

 M' short-petiolate. Abdomen reddish ; lateral margins of the tergites broadly 

 dark brown. Male hypopygium of simple structure. 



