56 THE DIPTERA-BRACHYCEKA OK TASMANIA. 



also, in the female, by the wings being hyaline, instead' 

 of bearing two black bands. 



P. eleyans may be found amongst long grass, and is 

 usually common where it occurs. My dates range from 

 January 12 to February 1. 



Parapsilocephala bifasciata, Sp. nov. (Fig. 25). 



Antenna? with the third joint but little longer than 

 the first and second together; eyes practically touching 

 in the male, widely separated in the female ; thorax shin- 

 ing black, with two grey stripes, which are most distinct 

 in the female; abdomen black, the second, third, and 

 fourth segments with a white hindmargin ; femora black; 

 tibiae brown ; wings in male hyaline, with the exception 

 of a faint clouding above the discal cell, in female crossed 

 by two black bands and with the tip blackish. 



Length. Male, 5 mm. ; female, 6 mm. 



Hab. Bagdad Valley. 



Fig. 25. Wing of Parapsilocephala bifasciata. 



Male. Face white ; front chiefly occupied by the eyes,, 

 black, with white tomentum adjoining base of antennae 

 above. Proboscis and palpi light brown, both concealed 

 within the mouth aperture. Antennae with first joint 

 whitish, second and third brown ; the first joint twice the 

 length of the second, the third slightly longer than the 

 first and second together, and broader than either of them. 

 Eyes practically joined in the middle of the front. Thorax 

 shining black, with two somewhat indistinct light grey 

 stripes; there are two pairs of prescutellar bristles; scu- 

 tellum black, with two black marginal bristles. Abdomen 

 black, the second, third, and fourth segments with white 

 hindmargins ; genitalia black. Legs with the femora black, 

 anterior and middle tibiae lighi yellow-brown, posterior 

 tibiae dark brown, with apices and bristles black; tarsi 

 black, the base of first joint light, yellow-brown. Wings 

 hyaline, with a faint clouding directly above the outer 

 half of the discal cell. 



Female. Owing to the banding of the wings, this sex 



