Diptera Brasiliana. 



BY S. W. WILLISTON. 



PART II 



* 



CONORS. 



1. First basal cell hyaline 2 



First basal cell clouded throughout 6 



2. Third joint of the antennae as long as the first two together: 



small* species parvus, n. sp. 



Third joint of the antennae but little if any longer than the 



second joint 3 



3. First posterior cell hyaline 4 



First posterior cell more or less clouded 5 



4. Cheeks yellow angustifrons, n. sp. 



Cheeks black ornatus, n. sp. 



5. Face black in ground-color argentifacies, n. sp. 



Face yellow, large species grandis, n. sp. 



6. Red species ; front red riifn^, n. sp. 



Black species ; front black 7 



7. Face and cheeks black in ground-color magnus, n. sp. 



Face and cheeks yellow ijiornatus, n. sp. 



1. Conops magnus, n. sp. 



Female. Front black, shining, the vertical callosity somewhat 

 reddish. Face and cheeks yellowish brown, the orbits silvery pollin- 

 ose. Antennae brownish black; second and third joints subequal, 

 first joint about two-thirds the length of the second ; third joint of the 

 style with a long bristly extremity. Thorax shining black \ pleurae 

 lightly whitish pollinose. Abdomen deep black, opaque ; lightly 

 whitish pollinose posteriorly ; ventral process of the fifth segment 

 large. Wings deep brown in front, extending through the two basal 

 cells, and the basal part of the discal cell ; outer part of the first pos- 

 terior cell subhyaline, as also behind the streak corresponding to the 

 spurious vein of the Syrphidae. Legs black ; base of the femora, of 

 the tibiae, and of the tarsi, somewhat yellowish. 



Length 21-24 millimeters. Six specimens, Chapada, H. H. Smith. 



*See Trans. Amer. Entom. Soc. xv, p. 243, for Part T. 



(13) KAN. UNIV. QVAH., VOL. I, NO. I.JULY, 1S92. 



