138 Journal New York Entomological Society. [Voi.xviii. 



Orthosia. These species are duhitans (sputatrix), cogitata, latcritia, 

 illustra, conradi, lutosa, helva, inficita and morna. Of these illustra 

 was unknown to Hampson in nature, and its association with the 

 others in the genus is not warranted. Hadena morna Strck., of which 

 hulstii Grt., is correctly made a synonym, is incorrectly identified — 

 perhaps on my authority — and that belongs to Sidemia Stand., as used 

 by Hampson, and very much resembles the Hadena subornata Staud., 

 from Mongolia, as figured on Hampson's Plate CXVIII, f. 31. 



The remaining species comprise the three former hadenids, lat- 

 critia, duhitans and cogitata, separated by Hampson from the others 

 because of the white lunule on the outer edge of the reniform, and 

 the orthosiid species conradi, lutosa, helva and inficita in which the 

 reniform has no white. The two series have very little in common, 

 really, and none of the orthosiid series would run down to the genus 

 Agroperina in the synoptic table of genera, although the hadenid spe- 

 cies would. Nevertheless, for convenience, and because the orthosiid 

 species are really homeless elsewhere, they may be conveniently con- 

 sidered here. 



A. lateritia has more pointed and more trigonate wings than either 

 cogitata or dubitans, and the generic characters apply perfectly. The 

 thoracic vestiture is composed chiefly of flattened hair which tends to 

 become somewhat broader at tip and in well-preserved specimens the 

 basal tufting on dorsum is also evident. In the male antennae the 

 joints are scarcely marked and the ciliation is hardly grouped as a 

 tufting, although most obvious at the middle of each joint. In the 

 series before me extending clear across the continent north of New 

 York, down the Sierra Nevada Mountains into California and down 

 the Rocky Mountains into Colorado, there is no confusing variation. 

 The purplish red-brown color varies little — sometimes a little more 

 rusty, sometimes a little more smoky; but always very uniform and 

 without contrasting maculation. The white-edged reniform is the 

 most obvious bit of ornamentation, the t.p. line may have a series of 

 whitish venular points, and the s.t. line may be traceable by a paler 

 shading; but for the rest it may be set down as merely traceable. 

 Dates of flight range from June into August. 



The male genitalia have the characteristic ladle-shaped tip of the 

 large hadenids, fringed with spinules and with a spinulose area at the 

 lower margin: the clasper is small and rather slender, tapering rather 



