NO. 1934. NEW AMERICAN PIPUNCULID.^—MALLOCH. 295 



Allied to p. loewii, Kertesz, but easily separable by the charac- 

 ters given above. 



Type.— C^t. No. 14802, U.S.N.M. 



PIPUNCULUS EXILIS, new species. 



Male. — ^Eyes distinctly separated, the frontal stripe nearly as wide 

 as frons above antennae, glossy black with a raised central ridge 

 which projects wedge like into the upper half of the silvered frons, 

 face broader than frons at above antennae, silvered, antennae with 

 basal joints black, third jomt elongate acuminate, the apical acumi- 

 nate portion rather longer than the thick basal portion, the whole 

 joint with silvery pubescence which gives it, especially toward the 

 tip, a white shining appearance, arista swollen and shining black 

 at base; occiput silvered on lower portion but shining black on 

 upper third and without any silvering at the vertex; thorax with 

 a few pale scattered hairs, distinctly shining, no noticeable dusting 

 anywhere, pleurae distinctly-gray dusted ; abdomen shining, elongate, 

 slightly broader apically, first segment entirely gray-dusted, the 

 lateral comb of hairs long and yellowish, remaining segments only 

 indistmctly gray-dusted low down on lateral margins, hypopygium 

 small, symmetrical, viewed from above only about one-fourth as 

 long as fifth segment, a distmct depression on right side, ventral 

 processes small and inconspicuous; legs black, only the extreme 

 apices of femora and bases of tibiae yellowish, tarsi paler, notice- 

 ably so beneath except the terminal joint, all tibiae with pale pubes- 

 cence, the ventral surfaces of hind tibiae very thickly covered with 

 short pale hairs, a few pale hairs on ventral surface of hind femora 

 at apical thhd, no noticeable bristles anjnvhere; wings clear, inner 

 cross vein distinctly before end of first vein and about one-fifth 

 from base of discal cell, outer cross vein about one-half its own 

 length from end of fifth vein, halteres with stalk brown and knob 

 yellow. 



Length, 3 mm. 



One male, Medicine Hat, Alberta, Cajiada (Malloch). 



Type.— C&t. No. 14803, U.S.N.M. 



Allied to suhvirescens Loew, but this has the eyes in contact; 

 suhnitens Cresson, which has the fourth and fifth segments notice- 

 ably gray-dusted, but not the first especially, and scoparius Cresson, 

 which has the lateral comb on first segment long and black. 



PIPUNCULUS INCONSPICUUS, new species. 



Female. — Frons widest at middle, where it is about one and one- 

 half times as broad as at above antennae, nearly as broad at vertex 

 as at antennae, silvered at lower half, dull black above, face dis- 



