118 THE CANADIAN ENTOMOLOGIST. 



SYNOPSIS OF THE ASILID GENERA MALLOPHORA AND 



NICOCLES. 



BY D. W. COQUILLETT, LOS ANGELES, CAL. 



With the exceptions of Mallophora ardcns, Macq., and M. fulviven- 

 tris, Macq., neither of which have been identified, the following table 

 contains all the species belonging to this genus at present known to occur 

 in America north of Mexico. Three species are known to me to inhabit 

 Southern California : fautrix, O. S., originally described from Mexico ; 



Guildiana, also found in Montana, Kansas and North Carolina ; and a 

 new species described below : — 



i. Pile of abdomen light coloured, none black .2 



Pile of abdomen light coloured, many on the fourth or following 



segments black 5 



Pile of abdomen wholly black nigra, Will. 



2. Femora, except the extreme apex, black 3 



Femora largely or wholly red 4 



3. Thorax destitute of black pile, first posterior cell broadly 



open megachile, n. sp. 



Thorax with black pile, first posterior cell closed . . clausicella, Macq. 



4. Femora wholly red, pile of legs largely black fautrix, O. S. 



Femora marked with a distinct black spot on each, pile of legs 



light yellow Guildiana, Will. 



5. Pile of venter light coloured 6 



Pile of venter black orcina, Wied. 



6. Species not exceeding 15 mm. in length laphroides, Wied. 



Species exceeding 20 mm. in length bomboides, Wied. 



Mallophora megachile, n. sp., £ $ . Black, tibiae and extreme apices 

 of the four anterior femora yellow. Pile of entire body grayish-white, 

 more yellow on the tibiae, a kw black ones on the antenna?, front, tips of 

 posterior femora above, and many on apices of the posterior tibiae and on 

 all the tarsi ; that on the hypopygium of the male rather dense, white, 

 appressed and parted in the middle. A few black bristles at apex of each of 

 the four posterior femora above, also on the under side of the posterior 

 femora and on the posterior tibiae. Halteres brown. Wings grayish- 

 hyaline, costal and marginal cells darker ; first posterior cell broadly 

 open ; apices of the fourth and of the three following veins nearly colour- 

 less. Antennal style less than three-fourths as long as the third joint. 



