Vol. XXVi] ENTOMOLOGICAL NEWS. 45I 



Table or Spbois. 

 Males. 



I. Second antenna! joint and leg* yellow • Havipts 



Antennae black 3 



X. Bftsal joint of hind tarsi notched near base beneath 3 



Not so atra 



3. Hind tibiae stout with an apical spar extending to or beyond the 



notch 4 



Hind tibiae without any spur 5 



4 Fore tilib? very long and slender with black swelling near middle; 

 hind tibial spur short ; basal joint of hind tarsi shorter than 



foUowing armipes 



Fore tibiae normal ; hind tibial spur very long; basal joint of hind 



tarsi longer than foUowinf armata 



5. Tibiae and femora blade Hbialis 



Tibiae and only apical half of femora yellow rileyi 



FewfUs. 

 1. Second antcnnal joint and kg* yellow ftavipfs 



AatcnnM blade ' 



a. SIMkm tpcdcs with ydlow scutetlura seulettata 



Opake pntinose specie* •• 3 



3. Leg* entirely ycOow ^^^ 



PeoMMV and tibiae marked with black picHpet 



Mytfaicomyia scntcUata, Fig. 4. 



igu. Coquillctt Proc. U. S. Nat Mus. xxr. los. 



9. Black, polished, sparsely pilose. Frons at antennae, face, cheek*, 

 oral marRin. humeri, notopleural stripe and post aUr spot, scutellum, 

 pleoral stripe sometimes faint or wanting, halteres, apices of abdominal 

 wg m tnU broad laterally. Tenter, knees, apices of tibiae. Ursi. or some- 

 times entire legs except apices of tarsi, ydlow. 



Third antennal joint ovate, broader than second, somewhat longer 

 than broad (fig. 4) : style cylindrical hardly half as long as third. Pro- 

 botd* short not longer than head. An-tl rrll <)f>cn. Length 1.5 mm. 



i. Unknown. 



Type.— 9 , Williams. Arizona, June 6, 1902 (1^1. S. Barber), 

 [U. S. N. M. No. 6195). 



Paratypes.—Z 9 ; topotypical. 



Before me arc four specimens from Alamogordo, New Mex- 

 ico, and one from Highrolls, New Mexico, collected in April 

 and May, which I refer here without doubt. The color of the 

 legs varies considerably and it is questionable whether such 

 can be used in the separation of the species. In three of these 



