THE GENUS MONODONTOMERUS — GAHAN 473 



eyes, the face distinctly more than half as long as distance from 

 antenna! fossae to anterior ocellus; funicular joints quadrate to a little 

 longer than broad; ring joint about twice as broad as long. Thorax 

 appearing a little narrower in proportion to its length than in some of 

 the other species, and with scidpture of mesonotum and scutellum 

 made up of distinct punctures intermingled with very fine reticula- 

 tions or wrinkles; scutellum behind transverse gToovc finely aciculated, 

 the aciculation weaker medially, tlie marginal groove uninterrupted; 

 postscutellum smooth, with a weak median cariria; propodeum with 

 median depression rather shallow and triangular; suiface of propodeum 

 between median depression and spiracular sulci distinctly aciculately 

 sculptured; mesepimeron polished; mesosternum and mesepisternum 

 with vei-y shall ovr reticulation, the mesepisternum more strongly 

 sculptured along its posterior margin; posterior coxae strongty sculp- 

 tured outwardly, anterior and middle coxae less strongly so; posterior 

 femur not much thickened and with tooth on ventral margin not 

 especially long or slender and located at about apical one-fom*th of 

 femm*; wings extending beyond apex of abdomen; submarginal, mar- 

 ginal, postmarginal, and stigmal veins in approximately the propor- 

 tions of 40, 16, 8, and 5, respectively; abdomen about as long as head 

 and thorax together; first tergite comprising about one-third length 

 of abdomen, perfectly smooth dorsally; second, tiiird, and fourth 

 tergites dorsally with weak transverse aciculations, smoother toward 

 apex; fifth tergite smooth dorsally; ovipositor sheaths equal to or a 

 little longer than abdomen. 



Male. — Length 3.2 to 4.2 mm. Similar to the female except that 

 the antemial scape is much thickened, strongly curved dorsally. and 

 deeply and broadly excavated or notched ventrally; the funicular 

 joints all quadrate or nearly so. 



Redescribed from the following specimens: One female (type of 

 montivagus), West Cliff, Colo.; one female, Boulder, Colo., collected 

 August 1 at nest of Anthophora occidentalis by T. D. A. Cockerell; 

 tliree females, Boulder, Colo., July 31, 1908, Cockerell collector; one 

 male, Custis County, Colo., Cockerell collector; one male, Colorado 

 vSprings, Colo., July 14, 1895, Cockerell No. 3569; one male, on 

 Populus, Boulder, Colo., May 8, 1895, Cockerell No. 2945; two fe- 

 males, Santa Fe, N. Mcx., July 29, 1895, Cockerell No. 3918; two 

 females, Helena, Mont., July 1892, H. G. Hubbard collector, in gal- 

 leries of Melissodes; four females (one the type of americanus) and 

 one male, Los Angeles, Calif., Coquillett collector; two females, Los 

 Angeles, Cahf., from cell of Anihophora, A. Davidson collector; one 

 female, Beaver Valley, Utah; four females, Algonquin, 111., C. F. 

 Baker, collector; and one female, Newark, Del.. June 6, 1932, L. A. 

 Steams collector. 



