LJST OF DIPTERA. 139 



legs brown ; tips of hind thighs ferruginous : wings very slightly 

 tinged with brown, tawny at the base and along the fore bor- 

 der ; beneath the latter there are two large irregular brown spots, 

 with a colourless spot between them ; veins tawny ; poisers pale 

 yellow, their knobs nearly white. Length o( the body 7 lines ; of 

 the wings 18 lines. 



a. New Holland. 



b. New Holland. From Mr. Children's collection. 



Pangonia tricolor, n. s. fern. Fusea, capite albo, thoracis vittarum 

 quinque extemis fulvis, interioribus canis, mediaque fusca, 

 abdomine fasciis vittis basi ventreque fulvis, pedibus ferrugineis, 

 alls limpidis, basi marginibus anticis maculisque septem fuscis. 



Head white, thickly clothed beneath with white hairs : eyes 

 dark piceous : mouth bright tawny : sucker black, hardly half the 

 length of the chest : feelers ferruginous : chest and breast brown ; 

 the latter and the sides thickly clothed with white and tawny and a 

 few black hairs ; the chest has two tawny stripes, and between them 

 are two hoary stripes enclosing a narrow pale brown stripe, and 

 sending forth two oblique hoary bands to the sides of the chest : 

 abdomen brown above, tawny beneath : its back is slightly clothed 

 with tawny hairs, and the hind borders of its segments are tawny ; 

 there is also an oblique tawny stripe along each side of the first and 

 second segments : legs ferruginous : wings colourless, brown at the 

 base and along the fore border, and having seven brown spots on 

 each disk ; veins black ; poisers tawny. Length of the body 5 lines ; 

 of the wings 10 lines. 



a. Western Australia. From Mr. Clifton's collection. 



Pangonia gemella, n. s., fern. Cinereo-picea, lateribus ventreque 

 ferrugineis, thorace cano quinque vittato, abdomine maculis 

 albis trivittato, antennis pedibusque nigris, alis cinereis. 



Body grayish piceous, and clothed with short black hairs : 

 eyes, feelers, and mouth black, the latter but little longer than the 

 head : chest with five indistinct hoary stripes, dark ferruginous on 

 each side : abdomen dark ferruginous on each side, and with three 

 rows of nearly triangular white spots on the hind borders of 

 the segments ; underside dark ferruginous, black on the middle of 

 the fore border of each segment : legs black : wings gray ; cross- 

 veins clouded with black ; wing-ribs, veins, and poisers also black. 

 Length of the body 5 lines ; of the wings 11 lines. 



a. Western Australia. From Mr. Clifton's collection. 



