AMERICAN LEPIDOPTERA. 15 



the wing, but lost below that point in the specimens before me. There is a 

 slender black terminal line at the base of the fringes. The orbicular is entirely 

 lost, or is represented only by a blackish dot. The reniform is a narrow, white, 

 oblique lunule. margined by black scales and forming the only contrasting feat- 

 ure in the maculation. The submedian vein is shaded with hlackish throughout 

 almost its entire course. Veins 3 and 4 are shaded with blackish to the t. p. 

 line, and vein 6 is black shaded through the s. t. space. Nearly all the veins are 

 blackish marked in the terminal space. Secondaries very pale reddish gray, 

 somewhat glistening, a little more powdered outwardly. Beneath almost whit- 

 ish, with a reddish shading, the veins marked with dusky. Expanse 1.15 in.; 

 29 mm. 



Hab. — Mt. Shasta District : Alameda, California, in June. 



The term originally proposed by me proves to be preoccupied for 

 a congeneric species, and I therefore substitute a new name. Few 

 examples of the species have been seen in collections, and there 

 seems to be little or no variation. The structure of the male geni- 

 talia is very simple. There is a moderately broad harpe bent near 

 the middle, the tip round and fringed by a series of small spinules. 

 There is a long, stout clasper extending from within the middle 

 almost to the tip at its inferior margin. From about the middle of 

 the harpe there starts a strongly curved cylindrical process, with a 

 blunt, rounded tip forming a second clasper. The moth is very 

 simply marked, and the species should be easily recognized. It is 

 questionable whether it should not form, with u-album, a distinct 

 series. 



Hytlroecia u-album Gn., pi. 1, fig. 2. % genitalia. 



1852. — Gn., Spec. Gen., Noct., i, 345, Ceramica. 



1856.— Wlk., Cat. Brit. Mus.. Het,, x, 418, C. v-album. 



1874.— Grote, Bull. Buff. Soc. Nat. Sci., ii, 22, C. v-album. 



1891.— Smith, Proc. U. S. Nat. Mus., xiv. 231, Mamestra. 



1893.— Smith, Bull. 44th U. S. Nat. Mus., 174, Hydrcecia. 

 purpitripennis Grt. 



1874.— Grote, Proc. Ac. Nat. Sci. Phil., 206. Apamea. 



1893.— Smith, Bull. 44th U. S. Nat. Mus., 174, pr. syn. 

 baliola Morr. 



1874.— Morr., Proc. Bost. Soc. N. H.. xvii, 14s. Orthosia. 



1875. — Grote,.('an. Ent., vii, 58 — purpnripennis. 



1875.— Grote, Bull. Buff. Soc. Nat. Sci., ii, 30§— purpuripmnis. 

 Ground color a rich purplish brown, varying somewhat in shade, sometimes 

 becoming almost carneous. Head and thorax usually a little darker, more in- 

 tensely brown than the primaries, without special markings. Primaries with a 

 deeper, richer, reddish brown shade through the middle of the median space, 

 and throughout the terminal space. At the base and along the inner and costal 

 margin there is a distinct bluish shading, which varies in intensity in the speci- 

 mens, sometimes relieving the reddish brown disc quite strongly. The median 



TRANS. AM. KNT. SOC. XXVI. MAY, 1899. 



