36 DIPTERA 



GENUS UNCERTAIN. 

 3 AE. venustipes, Skuse, Proc. Linn. Soc.N. S.Wales, Vol. 3, p. 1761 (18S9) (Elizabeth Bay, Nr. Sydney). 



3. Genus FICALBIA, Theobald 



Ficalbia. Theobald, Mon. Culic. Vol. 3, p. 296.(1901). 



Characters. — Head clothed with flat scales entirely, with a few upright forked ones behind. 

 Thorax with narrow-curved scales; scutellum with flat scales only, metanotum nude. Palpi very small. 

 Proboscis rather long, swollen apically. Wings with the fork-cells moderately long, the 1st submarginal 

 longer than the 2d posterior; median vein-scales broad and spatulate ; upper border of costa spiny. 

 Ungues of c? unequal on fore and mid legs, all simple. Small species. The 9 unknown. 



Geographical distribution of species. — Two species only known, both tf's. 



1. F. simplex, Theobald, Mon. Culic. Vol. 3, p. 297 (1901) (Ceylon). 



2. F. minima, Theobald, idem, p. 262 (1901) (Quilon, S. India). 



4. Genus URANOTAENIA, Arribalzaga 



Uranotaenia. Arribalzaga, Dipt. Argent, p. 63 (1899). 



Characters. — Head clothed with flat scales all over, and upright-forked ones (apparently not 

 always visible, if present). Thorax clothed with narrow-curved scales and some flat ones; scutellum 

 with flat scales ; metanotum nude. Palpi ver}' small in both rj' and 9- Proboscis expanded apically. 

 Antennae plumose in the Q? ; verticillate in the 9 • Wings with marked venation, the fork-cells both 

 small, the first submarginal very small, smaller than the second posterior cell, stems of the fork-cells 

 long; veins clothed with small broad equilateral scales, abruptly truncated and with lateral clavate or 

 elliptical scales to some of the veins; on the roots of the wings are usually some flat scales of more or less 

 brilliant hue ; spine like scales along the costa. Of small size and usually with some metallic scales. 



This genus is easily told by the marked fork-cells and scales on the head and thorax. 



Geographical distribution of species. — This genus chiefly occurs in South America and 

 the West Indes but also in North America, Africa and Australia. 



1. U. pulcherrima, Arribalzaga, Dipt. Argent, p. 65 (1899) (Brazil, Argentine, Antigua). 



2. U. geometric a, Theobald (Lutz Ms.), Mon. Culic. Vol. 2. p. 247 (1901) (Brazil). — c late 2, Fig. 10. 



3. U. saphirina, Osten-Sacken, Trans. Araer. Ent. Soc. Vol. 2, p. 47 (United States). 



Acdis saphivinus, Osten-Sacken. 



4. U. annulata, Theobald, Mon. Culic. Vol. 2, p. 25o (1901) (Bonn}', Gambia). 



5. U. naialia, Arribalzaga, Dipt. Argent, p. 64 (1899) (Argentine, Brazil). 



6. U . pygmaea, Theobald, Mon. Culic. Vol. 2, p. 254 (1901) (Queensland). 



7. U. caeruhocephala, Theobald, idem. Vol. 2, p. 256 (1901) (Old Calabar. Gambia, Sudan). 



8. U. malayi, Theobald, ibidem, Vol. 2, p. 258 (1901) (Selangor). 



9. U. alba, Theobald, ibidem, Vol. 3, p. 3o3(igo3) (Mashonaland). 



mashonaensisvar. alba. Theobald, Mon. Culic. Vol. 2, p. 262 (1901). 



10. U. apicalis, Theobald, Mon. Culic. Vol. 2, p. 298 (1903) (Antigua). 



11. U. pallidoventer, Theobald, idem, Vol. 2, p. 3oo (1903) (Brazil). 



12. U. lowii, Theobald, ibidem, Vol 2, p. 339 [ 1 9° 1 ) (St. Lucia, St. Vincent, Trinidad, Brazil). 

 i3. U. socialis, Theobald, ibidem, Vol. 2, p. 340 (1901) (Jamaica). 



5. Genus MIMOMYIA, Theobald 



Mimomyia, Theobald, Mon. Culic. Vol. 3. p. 304 (igo3). 



Characters. — Head clothed with flat scales and somewhat upright forked ones; Thorax 



