76 DIOGMITES RUFESCENS. 



the legs are not black but testaceous, and the face and 

 occiput are clothed with white hairs I cannot bring it 

 to any of the described North-American species with hya- 

 line wings; it seems to agree most with A. mucorea Low 

 (Cent. V[il. 48), but of this the legs are likewise black, 

 though covered with a pale toinetitum, and the upper-arm 

 of the second submarginal cell is said to terminate almost 

 in the tip of the wing , which is not the case in my specimen. 



4. Anthrax /estiva^ Phil. 



Philippi, Verb. zool. bot. Ges. Wien, XV (1865). 668. 16. 



Two male specimens from Chili (Dohrn). 



The description given by Philippi especially agrees with 

 one of these individuals. The other differs in some mea- 

 sure by the darker coloured scutellum and the greater ex- 

 tension of the brown margin at the costa of the wing, 

 which still enters into the radial cell (of which only the 

 enlarged end remains hyaline) and which also occupies the 

 upper basal cell till a little beyond the medial cross- vein; 

 moreover some of the cross-veins show an indication of a 

 dark margin. As the specimen does not show any other 

 difierence , I take it merely for a dark variety, 



5. Diogmites rufescens, Macq. 



Dasypogon rufescens , Macq. Suites a Buffon , Dipt. I. 

 295. 8. 



Two female specimens from Arizona in North- America 

 (Neumogen). 



Macquart's description agrees very well with these spe- 

 cimens, at least if we admit that he has overlooked the 

 spur at the end of the front-tibiae , for he has classed the 

 species in the group where the spur is absent. I am still 

 more inclined to hold this opinion , because Baron Osten 

 Sacken (Cat. of the Dipt, of J^. Amer. p. 72) has on the 

 same ground placed Dasypogon rufescens in the genus 



JN'otes froixi the Lieydun ]VI!useu.iri, Vol. IV. 



