NEMORAEA ERYTHROPYGA. 83 



15. Echinomyia immaculata, Macq. 



Macq. Dipt. ex. Supp. 4. 169. 6; pi. 15, f. 8. 



A. cT from Arizona (Neumögeu). 



I bring it to this species , as the description of Macquart 

 can in all respects be applied to it. The difference of na- 

 tive country (Macquart mentions it as being a native of Brazil) 

 could however be a reason for doubt. 



The face has a distinct yellowish red reflexion , especi- 

 ally at the oral margin; the cheeks are without bristles; 

 the palpi are very slender; the third joint of the antennae 

 is about as long as the second. 



o 



16. Nemoraea erythropyga, u. sp. 



Nigra ; facie , antennis pro parte majore , abdorainisque 

 segmento quarto rufis ; thorace 'striis quatuor griseis; pedi- 

 bus piceis; alarum nervo transversali medio infuscato. — 

 cf long. 11 mm. 



The hairy eyes , the facial ridges (the lower part excepted) 

 without bristles, the broad cheeks and jaws, the third an- 

 tennal joint which is not longer than the second , the ovate 

 abdomen and the discal vein which is not prolonged beyond 

 its curvation , bring this species to the genus Nemoraea. 



Face and cheeks sordid rufous ; front much narrowed 

 towards the vertex , blackish , only somewhat lighter at the 

 orbits ; on both sides of the root of the antennae a roun- 

 ded black spot; the lower frontal bristles not descending 

 beyond this spot. Eyes with yellowish-gray pilosity ; oral 

 bristles ascending along the facial ridges no further than the 

 tip of the antennae ; the cheeks also beset with many brist- 

 les. Antennae ferrugineous , reaching to the middle of the 

 face; the two basal joints with short bristles on the upper- 

 side ; the second joint elongated ; the third as long as the 

 second, a little enlarged and darkbrown towards the end; 

 arista black, thickened till about the middle. Palpi black. 

 Thorax black, on the upperside with four light-gray lon- 



Natea from the Leyden JVEuseuxn , Vol. IV. 



