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Wings longer and narrower, the crossbands darker and more 

 interrupted, the brown dots between them few in number. (Nigeria). 



L, simpsoni Alex. 



13. Femora with a conspicuous pale subterminal ring; metatarsi 

 conspicuously darkened at base ; hypopygium dark brown. (French 

 Congo). L. metatarsalba Alex. 



Femora without a pale subterminal ring; metatarsi scarcely 

 darkened at base; hypopygium brownish orange. (Cameroun). 



L. reisi Alex. 



The Gnophomyia guttatipennis of Karsch (Berl. Entom. Zeitschr., 

 31 : 369; 1887) may be a member of this genus altough possibly a 

 Conosia or Clydonodozus. It is certainly not a Gnophomyia but until 

 the type can be re-examined it is not safe to attempt to place it. 



Lecteria tibialis, sp. n. 



Belongs to the africana group; tibiae with three dark brown rings 

 alternating with two light yellow ones. 



Maie. — Length 30 mm.; wing 19 mm.; abdomen alone 24 mm.; 

 fore leg, fémur, 12.8 mm.; tibia, 14.9 mm. 



Female. — Length 35 mm.; wing 22 mm.; abdomen alone 27 mm.; 

 fore leg, fémur, 13.5 mm.; tibia, 15 mm. 



Rostrum and palpi brown, the terminal segment of the latter very 

 small and subglobular. Antennae with the elongate basai segment of 

 the scape almost black, paler at the extrême base; remainder of an- 

 tennae obscure yellow; basai two flagellar segments with the inner 

 face produced and without verticils; flagellar segments three to fourteen 

 cylindrical, with very long verticils on the outer face, segments five 

 to fourteen with similar verticils on the inner face likewise. Head 

 light brown, pollinose, the vertex a little darker, the orbital région 

 paler. 



Pronotum pale brown. Mesonotal praescutum light brown, with 

 a pair of intermediate darker brown stripes, separated in front, con- 

 verging behind, in the female with an additional capillary médian 

 vitta; pseudosutural foveae large and conspicuous, dark brown; a 

 group of long dark setae near the posterior latéral angle of the praes- 

 cutum; scutellum and postnotum yellow; the pleurotergite of the 



