12 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.78 



Pedicel usually plainly longer than the first funicle joint, or if subequal 

 or a trifle shorter than the first funicle joint, the first funicle joint is 

 shorter than the second and third 41 



3. Each axilla usually with two setae. In C. mariformis, new species and C. 



malthiisi Girault there are supernumerary setae, easily overlooked, and 



in C. greyarius, new species three distinct .setae 4 



Axillae about as densely and conspicuously setose as the meso.scutum. 

 First funicle joint four times as long as wide. Head, legs, and most of 

 thorax yellow. Abdomen blackish. (Australia) 1. redini Girault. 



4. Coloration of legs normal. Not spotted or banded suggestive of 



Marietta 5 



Femora and tibiae pale with brown spots and bands suggestive of Marietta. 

 Antennae particolored. An area of transparent cilia on disk of fore 

 wings. (Africa) 2. lepidus, new species. 



5. Species with the body black, or brownish black, without any yellow mark- 



ings except the median part of metanotum which may be yellow." 6 



Species with the body particolored, or predominately yellow, or purplish — 9 



6. Legs predominantly black or dark brown, sometimes with the bases or 



apices yellow. Face and cheeks usually predominantly black or brown — 7 

 Legs predominantly yellow, only the hind tibiae more or less black. Face 

 and cheeks mostly yellow. Tegulae and parapsides suffused with 

 brownish. Scrape concolorous with face, flagellum dark brown. 

 (Florida) 3. flavifrons Howard. 



7. Face, cheeks and antennae usually completely blackish. Setae on middle 



knees and dorsal margin of hind tibiae not especially strong, normal 8 



Face, cheeks, and antennae usually yellowish or orange, sometimes face and 

 cheeks more or less brown or blackish. Setae on dorsal margin of hind 

 tibiae sulwrect and slightly stronger than normal. Setae on middle 

 knees rather strong. (Africa) 4. anthracinus Compere. 



8. Femora and tibiae distinctly tipped with yellow or brownish yellow. Scutel- 



lum anteriorly sometimes furnished with two or three supernumerary 

 setae in addition to the three paired bristles. Setae of the knees and 



fore coxae weak. (Utah) 5. timberlakei, new species. 



Femora and tibiae not distinctly tipped with yellow but pallid at the ends. 

 The antennae more slender and with fewer sensoria than the foregoing 

 two species. This species can be definitely distinguished from C ari- 

 thracinus Compere and C. timherlakei, new species, by the possession of 

 characteristic markings an the sides of the fifth and sixth tergites as 

 shown in figure 166. (Africa) 6. atratus Compere. 



9. Fore wings hyaline, or faintly and uniformly tinted, or with a faint cloud 



beneath the stigmal vein 12 



Fore wings distinctly infuscated 10 



10. Abdomen pale suffused with brownish. Fore wings generally infuscated. 



Antennae unusually long 11 



Abdomen black. Axillae and scutellum brownish, or ferruginous, some- 

 times suffused with fuscous. Median part of metanotum and propodeum 

 yellow. Hind coxae, trochanters, and femora yellow. First funicle joint 

 slightly more than twice as long as wide. Third funicle joint only 

 slightly longer than wide. Forewing.'q with a large, distinct, infuscated 

 cloud beneath the marginal vein, more or less interrupted by a diagonal 

 hyaline streak. (Africa) 7. rusti Compere. 



* The word body as used in this paper refers to the thorax and abdomen combined. 



