168 



NORTH AMERICAN DIPTERA 



Asilidse II. — 31, Psilocurus caudatus; 35, Leptopteromyia gracilis (Brazil) : 36, Holco- 

 cephala, head from in front, 37, Scleropogon tur(|uii; 38, Archilestris magnificus ; 39, Chry- 

 soceria picitarsis; 40, Dizonias ; 41, Pseudoius bicolor; 42, Atonia mikii; 43, Atomosia mac- 

 ((uartii, antenna ; 44, Cerotainia, antenna ; 4!), Lanipiia, hind leg ; 46, Andrenosoma. 



