420 Miss G. Ricardo — A Revision of 



Erax asiloides, Macquart. 



Type probably destroyed. 



Described as black. Abdomen with yellow segmentat'ons. 

 Legs black, posterior femora at base and tibiae red. Wings 

 with no appendix. 



Length, $ , 6 lines without ovipositor. 



From the figui'e of wing this species hardly appears to 

 belong to this genus. 



Era.x caudatus, Fabricius. 



Placed by Schiner in this genus, but not known to him. 



Described as a female, 11 lines. 



Yellow, with brown stripes ; abdomen black, with golden 

 bands and light honey-yellow legs. Beard white. Moustache 

 of seven yellowish bristles. Wings yellowish. 



From Australia. 



Erax fuscipenniSy Macquart. 



Described as black. Thorax golden-coloured, with black 

 stripes. Legs black : tibiae testaceous, black at apices. 

 Wings brown. 



Length 94 lines. ^ . 



Erax plantaris, Thorns. 



Described as brown. Allied to Neoaratus hercules, Wied., 

 but wings not dilated in the middle and colour of abdomen 

 different. Antennae yellow. Abdomen yellow, at base olive. 

 Legs chestnut ; knees and tarsi black, posterior tibiie yellow. 



Length 23 mm. $ . 



From Australia. 



Erax Salomon, Macquart. 



Seen in Paris Museum, 12. 4. 11. 



Type a male. Abdomen half gone and in a bad state. 



Face with a large protuberant tubercle, bearing the 

 moustache. Antenna black, the first two joints with black 

 hairs, the third I'eddish, small and conical, with a long 

 terminal arista almost the length of the entire antenna. 

 Legs black, tibiae testaceous ; the bristles mostly black, some 

 yellow ones on the femora. Wings dilated, neuration very 

 similar to that of Era.v completus, Macq. (see Dipt. Exot. 

 i. (2) pi. ix. fig. 9), but the posterior branch of fork of third 



