172 THE CANADIAN ENTOMOLOGIST. 



and discal ones. Legs black, femora silvery on outside, pulvilli whitish. 

 Wings grayish-hyaline, tegulce nearly white, halteres pale rufous. 



Length of body, 6 mm.; of wing, ^y^ mm. 



Described from one specimen; Chihuahua, Mexico. Mex. Cen. R.R., 

 August 4. 



Vanderwiilpia seqtiens, n. sp. $. 



Eyes brown ; frontal vitta dark brown ; sides of front, face and 

 cheeks silvery-white, the sides of front slightly brassy next vitta ; two 

 orbital bristles; antennae blackish, slightly rufous at end of second joint, 

 arista blackish ; proboscis black, palpi black, rufous at extreme tip ; occi- 

 put silvery-white, brassy above, gray-hairy. Thorax silvery-white, with 

 two heavy deep black vittse reaching scutellum, portion between vittae 

 more or less brassy ; scutellum silvery, edged with black on sides con- 

 tinuing on sides of thorax posteriorly. Abdomen shining black ; bases of 

 segments two to four narrowly silvery-white poUinose, faintly so on basal 

 half, first segment faintly silvery, anteriorly on sides and beneath ; first 

 two segments with one lateral macrochaeta and a median marginal pair ; 

 third with eight marginal, and anal with about as many marginal, which 

 are not so strong. Legs black, femora silvery beneath, especially front 

 pair ; front coxae long, silvery ; middle and hind claws and pulvilli a little 

 elongate, anterior ones minute. Wings golden fuscous on costal portions, 

 grayish internally, more smoky towards apex, apical and hind cross-veins 

 smoky ; fourth vein with decided wrinkle at bend, apical cell extremely 

 short petiolate ; tegulse white ; halteres black, rufous at base. 



Length of body, 2,}i mm.; of wing, 6}i mm. 



Described from one specimen ; Las Cruces, New Mexico. August 

 26. This species differs from the type species of the genus V. atro- 

 phopodoides, Twns., in having the apical cell not moderately long petiolate, 

 but closed immediately before margin. The arista is long pubescent, and 

 this genus belongs in the Dexiidce ; although the genus Atrophopoda, 

 so closely allied to it in the structure of the front feet, belongs by the 

 character of the arista in the Tachinidce s. str. 



