VOLUCELLA. 



i. / . evccta. 5 8 in. ; black, with yellow hair. 



HELOPHILUS. 



1. H. lat/fi-oHs. 5 g in.; chest gray yellow, hairv, with three black stripes; body black 



and orange. 



2. //. similis. l / 2 in. ; like the last, but smaller. 



SYRITTA. 



i. S. pipiens. T % in. ; shiny black, with white spots. 



i. C. -cerbosa. 



CRIORHINA. 



^ in. ; yellowish gray and black hairy ; end of chest whitish. 



I. M. marg'inata. 



MESOGRAPTA. 



y^ in. ; orange and black, like a small .V. liivrrsipes. 



(44) 



