THE CANADIAN ENTOMOLOGIST. 293 



species, our common Hydroecia iiictitans, L. { = americana^ Speyer ; 

 lusca, Harris), that I used Apaniea at one time for this species. The 

 species leiicostigma, type of Helotropha, Led., formed one of Guenee's 

 original species of Hydroecia, Guen., Noct. Eur. Index Meth., 1841, as 

 also of Ochsenheimer's Apaniea. But, in 1852, Guenee referred 

 leucostigma back to Apamea, leaving nictitans, L., as type q{ Hydroecia 

 by process of exhaustion. 



Mr. Front's kind communication does not affect the conclusions I 

 have reached so far as to types of Noctuid genera. 



NOMADA SAYI AND TWO RELATED NEW SPECIES. 



BY CHARLES ROBERTSON, CARLTNVILLE, ILLINOIS. 



In Trans. Am. Ent. Soc, 20: 276, 1893, I described Nomada Sayi 

 from eight female and fifteen male specimens. At present I have forty- 

 five female and nniety 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, antennae long, joint 4 

 longer than 3 or 5, as long as 12, or nearly so, pygidium rather broadly 

 truncate; scutellum sub-bilobed, prominent; enclosuie 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 tegul?e, more yellowish ; about antennae, about ocelli, occiput, band 

 on mesonotum, middle of metathorax sometimes, band from wings to 

 middle and hind coxte, base of femora behind more or less, sometimes 

 hind metatarsi, base of abdomen, sometimes apical margins of segments 

 more or less, and sutures, generally black 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. 



$ . — Resembles the female ; joint 4 of antennge longer than 3 or 5^ 

 as long as 13, or nearly so, 5-8 sub-lobate at apex beneath : pygidium 

 bifid; black, mandibles, labrum, clypeus, sometimes a spot above, 

 inferior orbits as high as antennae in front and usually at base behind, 

 and scape in front, yellow ; sometimes a ferruginous spot at summit of 

 eye ; flagellura yellowish ferruginous, except towards base above ; collar 

 black or with a yellow or ferruginous interrupted line ; tubercles, tegul?e, 



