570 list of diptera. 



19. Atomosia dispar. 

 Purpureo-cuprea ; fades, pectus et tibia anteriores argenteo tomen- 

 tosa ,• abdomen et pedes nigra ; tibia anteriores setis longis ; 

 femora postica sublus spinosa; ala nigro-cinerea, basi limpida. 

 Dark purplish cupreous. Thorax and hind part of the head 

 with a few black bristles. Face, pectus and anterior tibiae with 

 silvery white tomentum. Mystax with a few white bristles. Abdo- 

 men dull black, taperiug from the base to the tip, narrower than the 

 thorax and more than twice its length. Legs black, hardly hairy ; 

 anterior tibia? with long bristles; hind femora spinose beneath 

 towards the tips. Wings blackish gray, limpid for more than one- 

 third of the length from the base, and with some limpid marks near 

 the base ; veins black. Halteres white. Length of the body 5 lines ; 

 of the wings 9 lines. 

 a. Santarem, Brazil. From Mr. Bates' collection. 



Asia. 



20. Atomosia purpcrata. 



Purpurea, punctatissima ; ala fusco-hyalina ; pedes rufi, tibiarum 

 apicibus tarsisque nigris. 



Atomosia purpurata, Westw. Trans. Ent. Soc. Lond. v. 233, pi. 23, 



f.5. 

 East Indies. 



Country unknown. 

 21. Atomosia pdella. 

 Fcem. Nigra; fades, mystax, vibrissa et barba alba; genua 

 rubida ; ala limpida. 

 Laphria puella, Wied. Auss. Zweifi. i. 531, 58. 



Genus 12. CORMANSIS. 

 Atomosia? similis, at alarum veuula discalis et vena externo- 

 media 3a non conjunct®. 

 Cormansis, Diplera Saundersiana, Pt. 2, 154. 



1. Cormansis Halictides. 

 Cormansis Halictides, Diptera Saundersiana, Pt. 2, 154. 

 East Indies. 



