Mi('K()ri-:zii:).iv 113 



(). AViii<js witli a blaekisli spot at tlie tip; antenna* roacliing nearly to the 

 oral margin. ...... Mycetaulis Loew. 



Wings wholly hyaline. ......... 7 



7. Proboscis long and slender, the labella folded back. Madiza Fallen. 



Proboscis short, the labella not folded backward ; cross-veins of the 



wings approximated. ...... Piopiiila Fallen. 



41. MICROPEZID/E. 



Front broad, bristly on the upper part. Face retreating in 

 profile, sometimes very much so. Antennae short or elongate, 

 porrect. Abdomen elongate ; genitalia in the male sometimes 

 very large and comi)licated. Wings large ; auxiliary vein 

 ])resent or not ; anal cell always present ; second basal cell 

 closed, except in Mieropeza. Legs long; tibiae without j)reapi- 

 cal bristle. 



The larva; and their habits of this group are unknown. 

 The flies are usually of considerable size and slender or very 

 slender, with very long legs. 



TABLE OF GFNEPvA. 



1. Thinl and fourth veins parallel Tetanura Fallen. 



Third and fourth veins not parallel, the first posterior cell narrowed or 



closed. ............ 2 



'2. Third antennal joint more or less elongated. . . . . . o 



Tliird antennal joint rounded. ....... 4 



•3. Antennal arista ajiical and l)are (West Indies, Central and S. America). 



Nkrits Schiner. 

 Antennal arista dorsal and ))lum()se (Central and South America). 



Cardiackpiiala Macquart. 



4. Auxiliar3- vein wanting; second basal cell and tlie discal cell united. 



Mk'Ropeza Meigcn. 

 Auxiliary vein pri'sent ; second basal cell comjilete. ... 5 



5. ritiniale and jjenultimate sections of the fourth vein of nearly equal 



lengtii; anal cell large. ..... Calorata Meigen. 



Ultinuite section of the fourth vein twice the length of the jienultimate 

 section ; anal cell small. ..... Tanvpeza Fallen. 



14 



