Dlptera from the Falkland Islands. 503 



right angle with costa; veins coarse; costa without spines, 

 relatively coarse and stout from end of first to end of third 

 longitudinal vein ; auxiliary (mediastinal) vein indistin- 

 guishable ; first longitudinal vein very coarse and stout; 

 anterior transverse vein frequently wanting ; posterior trans- 

 verse vein usually wanting, so that discal cell is incomplete, 

 but occasionally present. Halteres with elongate knobs. 

 Legs : femora swollen ; praeapical bristle present on all tibiae 

 in <$ , and at least on front and hind tibiae in ? , fine and 

 hair-like (often difficult to distinguish from surrounding 

 hair) in $ , conspicuous in ? ; middle and hind tibiae with 

 strong curved spines of medium length at tips ; first joint 

 of front tarsi in $ armed at distal extremity, on inner side, 

 with a scutiform tooth of chitin. 



Typical species, Pezomyia moseleyi, sp. n. 



Pezomyia moseleyi, sp. n. (Fig. 2.) 



<$ ?. — Length, $ (16 specimens) 4-75 to 9 mm., ? (7 

 specimens) 6 to 7 mm.; length of wing, <$ 12 to 2'75 mm., 

 ? 1-4 to 2 mm. 



Dorsum of thorax mummy-brown or sepia-coloured, humeral 

 cal/i smoke-grey or drab-grey, traces of a pair of narrow, ad- 

 median, greyish longitudinal stripes usually discernible on ante- 

 rior portion of dorsum ; abdomen clove-brown or greyish clove- 

 brown, in <$ , except at base, thickly clothed with tougish, dark 

 broivn, silky hair; legs raw sienna- or raw-umber-coloured, 

 conspicuously hairy in £ . 



Head (fig. 2, A) drab-grey or smoke-grey, front, except 

 orbits (narrowly) and ocellar triangle, darker ; epistoma 

 raw-umber-coloured; front and upper portion of occipital 

 region clothed with minute black hairs or bristles ; jowls 

 thickly clothed with long dark brown hair in £ , in $ 

 sparsely clothed with short hair of same colour; palpi ochra- 

 ceous or tawny-ochraceous, spatulate at distal extremity, 

 clothed with long dark brown hair in <$ and with shorter 

 hair in $ ; antennae cinnamon-rufous or brownish cinnamon- 

 coloured, third joint mummy-brown, paler at base, first and 

 second joints clothed with black hairs, arista cinnamon- 

 coloured. Thorax: pleura? and pectus greyish-cinnamon or 

 isabella-coloured, mesopleurse and sometimes also sterno- 

 pleurae more or less slate-grey, sternopleurae clothed with 

 dark brown hair. Abdomen : second segment in both sexes 

 nearly twice as long as third j abdomen in ? sparsely clothed 



