If, 



the species is, 



1. the internal clypeal hairs are close together, and the external barbirostris,or 

 are thickly branched, (see Plate I, figures 1 & 2.), sinensis. 



Then if the anterior thoracic hairs present the appearance 

 given in figure 1A, that is, with the internal one of the- three hairs 



strongly branched, (Stanton) barbirostris, 



while if the corresponding hair is simple, or merely pronged, as in 



figure 2A, (Stanton). ... sinensis. 



