102 E. T, CRE8S0N. 



% . — Less robust and more densely pubescent, especially on the 

 face; posterior femora much swollen and curved, the tibiae dilated in- 

 wardly at tip, which has a short obtuse tooth, the margin above rather 

 deeply eniarginate ; middle of 6rst and second abdominal segments 

 deeply and transversely excavated, the third less deeply so; fourth 

 and fifth segments except apical margin, black, the third sometimes 

 tinged with black. Length 5 — 5^ lines. 



Eight % 9 specimens. Collected in Nevada by Dr. H. C. Yarrow. 

 The pubescence is doubtless much faded from being long immersed 

 in alcohol. 



IIIeIi»«sodes nevadensiiii, n. sp. 



% . — Black, densely clothed with a long ochraceous pubescence ; 

 clypeus, labrum and spot on base of mandibles white; mandibles with 

 pale fulvous stripe to tips; antennae reaching beyond metathorax, 

 black, scape densely pubescent; the pubescence on legs more yellowish, 

 shading into brown on the tarsi ; abdomen clothed with short black 

 pubescence, that on first segment entirely ochraceous, a band on base 

 of second segment, another near apex and also near apex of third and 

 fourth segments of short dense pale ochraceous pubescence, sometimes 

 there are indications of a band near apex of fifth segment; venter 

 fringed with pale pubescence. Length G2 — 8 lines. 



Twenty specimens. Collected in Nevada by Dr. H. C. Yarrow. 



BonibuK nevaflensis, n. sp. 



9 . — Black ; thorax above and three basal segments of abdomen 

 above, clothed with a dense yellowish pubescence ; wings black or dark 

 fuliginous, legs clothed with black pubescence. Length 9 lines. 



% . — Like the 9 except that the pubescence of the face and head 

 above is yellowish ; the face narrower and the eyes much larger, 

 antennae longer, etc. Length 8 lines. 



Three % 9 specimens. Collected in Nevada by Dr. H. C. Yarrow, 

 and in Arizona by Mr. Henshaw. 



