66 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5 1 



in female, hind crossvein is middle between small crossvein and bend 



of fourth vein, macrochaetae only marginal. 



Type, townsendi (Bdemapeza, gen. now 



Eyes bare, a costal spine, cheeks one-half eye height 5 



Eyes hairy " 



5. Apical cell long petiolate, ending well before wing-tip; hind crossvein 



in middle between small crossvein and bend of fourth vein. 



Type, atra Metachata 



Apical cell very short petiolate, ending but slightly before wing-tip; 

 hind crossvein a little nearer to bend of fourth vein. 



Type, conica Ceratomyiella 



6. Apical cell open and ending well before wing-tip, bend of fourth vein 



with long stump, male antennae with third joint lyriform cleft. 



Type, lyrata Dichocera 



Apical cell ending well before wing-tip, a costal spine, hind crossvein 

 much nearer to bend of fourth vein, macrochaetae only marginal 

 (except on anal segment) 7 



Apical cell ending at or but slightly before wing-tip, eyes thinly hairy. . 8 



7. Apical cell closed in border (or narrowly open, fir very short petiolate), 



eyes thinly hairy, cheeks fully one-half eye height. 



Type, mexicana Microchira 



Apical cell moderately long petiolate, eyes thickly hairy, cheeks nearly 

 one-half eye height. 



Type, magnicomis Laclinoinnia 



8. Apical cell narrowly open, a costal spine, hind crossvein nearer to bend 



of fourth vein, cheeks not over one-fourth eye height, eyes very 

 sparsely hairy, all the male claws and pulvilli much elongated, female 

 claws atrophied and tarsal joints compressed and swollen, macro- 

 chaetae only marginal. 



Type, braueri Diaphoropesa, gen. nov. 



Apical cell closed in border (or very narrowly open or very short 

 petiolate). double costal spine, hind crossvein much nearer to bend 

 of fourth vein, cheeks fully one-half eye height, macrochaetae discal on 

 last segment only, claws and pulvilli of both sexes atrophied (?) 

 and tarsal joints swollen. 



Type, singularis itrophopoda 



Apical cell open, cheeks nearly one-half eye height, hind crossvein near 

 middle, no discal macrochaetae (ace. v. d. Wulp) or present on last 

 segment only (ace. B. & v. B.), male claws and pulvilli of anterior 

 tarsi elongated. 



Type, validinervis Paradidyma 



Note to table.— The group of Pseudomintho, Olivieria, etc., has the front 

 tarsi of female plump and swollen, with very small claws. The group of 

 Mintho, Actinochata, and Buantha has the last tarsal joint of all the feet in 

 both sexes swollen, and claws very short. But the frontal bristles do not 

 descend half way to vibrissas in any of these forms, and they are thus easily to 

 be distinguished from the above genera in the table, having somewhat similar 

 feet. 



Cholomyia inaquipes Bigot.— One specimen bred at the Cotton 

 Boll Weevil Laboratory, Dallas Texas, from Conotrachelus elegans, 

 issued May 29 (Hunter). 



