123 INSECUTOR INSCITI.E MENSTRUUS 



Hiatomyia Shannon: Arista with long plumosity. Subgenus 

 Cartosyrphus Bigot : Arista short pubescent, or bare. 



Hammerschmidtia Schummel : General color ferruginous ; 

 frontal aspect of head appearing triangular ; face tuberculate 

 in male ; thorax, legs and abdomen bearing black bristles ; 

 petiole beyond third and fourth veins longer than length of 

 discal cross-vein. 



Myiolepta Newman : Males only tuberculate ; scutellum mar- 

 ginate, lower posterior surface bare ; all the femora somewhat 

 swollen, spinose below; apical cross-vein joining third vein 

 nearly at wing margin, the petiole beyond being about one- 

 fourth the length of discal cross- vein; the second vein turning 

 up sharply at its distal end, joining the costa before the middle 

 of the space between the tips of the first and third vein. 



Bumyiolepta Shannon : Dififers from Myiolepta in having the 

 facial and body pile modified into whitish scales. 



Apicomyia, new genus ; type Myiolepta hella Will. : Differs 

 from Myiolepta in having the shape of the head, viewed from 

 the frontal aspect, distinctly triangular ; facial tubercle incon- 

 spicuous but present in both sexes ; scutellum faintly margin- 

 ated, lower posterior edge with a row of downward projecting 

 fine hairs ; second vein but slightly turned up at its tip and 

 joining the costa well beyond the middle of the section between 

 the first and third veins ; hind femora greatly enlarged, with a 

 prominent sawtoothed projection on the outer apical end. 



Chrysogaster Meigen, subgenus Barberiella, new. 



Frons bare ; face with fairly abundant pile ; second antennal 

 joint above and below with bristles greater in length than third 

 antennal joint ; face tuberculate in male ; lower posterior edge 

 with a single row of downward projecting pile; anal vein be- 

 yond anal cell short, being little longer than discal cross-vein ; 

 apical cross-vein directed outward. 



Named after Herbert S. Barber, who has on many occasions 

 proven his exceptional ability to collect rare insects. 



Type: Barberiella chilosioides, new species. 



