banks: new fossorial hymenoptera. 103 



antennae, reddish wings, more red than in M. ustulata, with definite 

 black tips. Metanotum densely haired, and transversely wrinkled. 

 Legs spined as in that species; third and fourth antennal joints a 

 little shorter than in M. nstulata. Wings with venation much like 

 M. iisfulata, but the second recurrent is practically straight and ends 

 nearly at middle of the third submarginal cell; the first recurrent ends 

 plainly before end of second submarginal cell; the third submarginal 

 extends rather further beyond the marginal than in M. ustulata. 

 I^ength, 15 to 20 mm. 



Mygnimia ustulata Dalbom. 



Occurs in Texas, Kansas, and Arizona. \Vings are black at base 

 as well as at tips ; the second recurrent vein sinuate, the marginal cell 

 broad at tip, the metanotum hairy and transversely wrinkled above; 

 the first recurrent ends practically at end of the second submarginal 

 cell. 



POMPILOIDES SUBCYLINDRICUS, sp. nOV. 



Type.— M. C. Z. 10,015. Va.: Falls Church, July, August. 

 Nathan Banks. Thirty-two specimens. 



Similar to P. cyUndricus, but the pronotum in both sexes is arcuate 

 behind. 



Black; in female the wings very dark, male with lighter wings, 

 dark at tips. 



9 Antennae rather shorter than in P. cyUndricus, the third joint, 

 however, elongate; hind legs also shorter than in that species. Face 

 about as in that syjecies; pronotum broadly arcuate behind; meta- 

 notum with median groove rather deeper than in P. cyUndricm. 

 Abdomen hairy at tip anrl on apex of ventral segments; venation as 

 in P. cyUndricus; third submarginal cell triangular or short petiolate. 



cT Similar to 9 , but very slender; the lower face and al)Out base 

 of antennae, part of pronotum, and much of the pleura silvery pubes- 

 cent; venter without brushes. 



Size as in P. cyUndricus. 



SOPHROPOMFILUS TU.MIFROXS, Sp. noV. 



Type.— M. C. Z. 10,01(). Calif.: San Diego Co., 14 June. E. P. 

 Van Duzee. One specimen. 



cf" Blue-black, densely hairy ; clypeus rounded below ; antennae 



