Diptera from the Falkland Islands. 501 



Mr. Yallentin contributes the following note: — "The 

 majority of the settlers are of opinion that this pest was not 

 present on the Islands until the advent of the S.S. ' Salem- 

 bria/ which carried frozen mutton to foreign ports. Others 

 state that this fly was introduced with game sent from time 

 to time from Monte Video. All the old settlers are agreed 

 that this Bluebottle was not found on the Islands when the 

 sheep runs were first started about 1867/' 



Dryomyzidae. 

 Pezomyia*, gen. nov. 



Allied to Actora, Mg., and Paractorafj Bigot, but distin- 

 guished from both inter alia by the wings being relatively 

 minute (see fig. 2), and of dimensions so reduced that the 

 appendages in question are useless for flight. 



Head (for profile see fig. 2, A) : face slightly excavated 

 below each antenna, thus showing two shallow depressions 

 separated by a somewhat more elevated median strip ; epi- 

 stoma slightly protruding, but lower margin of median 

 portion of face not otherwise prominent ; jowls descending 

 considerably behind, jowls and palpi, especially in <$ , clothed 

 with long hair ; vibrissa wanting ; size of bristles on vertex 

 and front as in Actora ; eyes similar in shape to those of 

 Actora, but somewhat smaller ; antenna similar to those of 

 Actora, arista bare, small, and slender, its terminal segment 

 only slightly thickened at extreme base. Thorax : dorsum 

 flattened above, outline of scutellum as seen from above 

 nearly semicircular. 



Thoracic chcetotaxy : — Humeral, 1 (very small, short, and 

 inconspicuous in £ , long and fine in ?), Notopleural, 2 

 (anterior one very small and inconspicuous in $). Pra- 

 sutural, absent in J , 1 or absent in ? . Supra-alar, 1 (in 

 <$ usually absent or so small as to be indistinguishable). 

 Post-alar, 2 (often much shorter in $ than in ?). Dorso- 

 central, 3 (in $ much smaller than in $ , and, except hind- 

 most, usually difficult to distinguish). Prcescutellar [inner 

 dorso-central), 1 (very small in $). Scutellar, 2 (apical 

 usually much the longer). Sternopleural, 2 (usually absent 

 in cJ , very slender in ? , as also in £ when present). 



* ne(6s, on foot, walking- ; nvla, a II v. 



t ' Mission Scientifique du Cap Horn,' t. vi., Zoologi . [nsectes, Dv. 38 

 (1888). — Founded for Paractora fuegiana, Uigot (ibid. Dv. 39), from 

 Tierra del Fuego. 



