i8 THE SCOTTISH NATURALIST 



Thorax, scutellum, and abdomen pale ash grey in colour. 

 iTtra^/ prominent, frons projecting, especially in the male (Fig. 2). 

 The eyes reddish, sub-approximate in the male, far apart in the 



female. Cheeks white and glistening. Fronto- 

 orbital bristles stout. 



Antennce black, arista long, tapering, 

 feathered on both sides. Palpi long, cylindri- 

 cal, black with yellow bases. 



Thorax with a broad median brown stripe, 



and a more slender and less distinct brown 



stripe towards each side — on which are situated 



/ H- Jf. the inner row of dorso-central bristles, which 



Fig. 2 —Head of are very strong. There is on each side 



adult male. ^ further more or less distinct brown mark 



bounding the post-humeral region. 



Scutellum unstriped. 



Abdomen bristly. In the male narrow cylindrical with a very 

 dark median line, in the female more conical with a less distinct 

 dark median line. 



Wings hyaline, tinged towards their bases with yellow. Costa 

 ciliate, with some short stiff very sloping spicules ; the equally sized 

 squamae yellowish-white, ciliated ; halteres yellow. 



Legs rather long. Femora and tibiee grey, thickly clothed with 

 black hairs; hind tibiae bristly; tarsi black. Pulvilli and claws 

 small in the female, very large in the male. 



Habitat. — Chiefly near the seashore, for the most part in sandy 

 places. 



The following note by Meade appeared in the Ent. Mo. 

 Mag., for Feb. 1899, and shows that the fly has once been 

 recorded from England 



" H. GRiSEA. — -Mr Beaumont sent a specimen of this well- 

 marked species (frequenting the nests of Hymenoptera) 

 which he had captured at Oxshott, in Surrey. It is narrow, 

 conical and pale ash-grey in colour, about 8 mm. long, 

 with a long-haired arista, a very prominent forehead and 

 face (buccate) and sub-approximate male eyes. The thorax 

 has three sub-distinct dark stripes. The palpi antenn^-e 

 and legs are black. The wings have a yellow tinge." 



The EGG is oval, the surface shows a honeycomb pattern. 

 As previously stated it is laid on the floor of the burrow, 

 just within the entrance; this I observed many times. I 



