In Trans. Am. Ent. Soc., 20: 276, 1893, I described Nomada Sayi from eight female and fifteen male specimens. At present I have fortyfive female and ninety male specimens which I have referred to this species, but which I now propose to describe under the three following names:

Nomada Sayi, Rob.— ♀. Mandibles simple, antennæ long, joint 4 longer than 3 or 5, as long as 12; or nearly so, pygidium rather broadly truncate; scutellum sub-bilobed, prominent; enclosure of metathorax coarsely reticulated at base, finely roughened beyond; head and thorax closely and coarsely punctured; abdomen shining, rather sparsely and finely punctured; ferruginous, the scape, front and middle legs, tubercles and tegulæ, more yellowish; about antennæ, about ocelli, occiput, band on mesonotum, middle of metathorax sometimes, band from wings to middle and hind coxæ, base of femora behind more or ress, sometimes hind metatarsi, base of abdomen, sometimes apical margins of segments more or less, and sutures, generally blach or blackish; segments 2 and 3 of abdomen with a yellow spot on each side; wings hyaline, marginal cell and apical margins clouded, basal nervure ending before transverse median. Length, 6–8 mm.