188 NOTES ON CYDOSIA AND CERATHOSIA. 



C. nobilitella (ram. Pap. Ex. PI. 264 f.G., Tinea; Hiil>. Verz., p. 168, Orameria; 



\\ es1 w . I >ono. Nat. Libr. ::7, p. 193, Cydosia : Wlk. Cat. Brit. Mus. Lep. Bet. 



2, j>. 523, Cydosia; Grt. A Rob. Trans. Am. Ent. Soc n, p. 186, Cydosia; 



Stretcb, Zyg. & Bomb., 162, pi. 7. f.8, Cydosia. 



imitella Stretch, Zyg. & Bomb., 163 e1 242, an sp. dist.prsec. Grote Bull. Bull'. 



Soc. N. Sci. . i. 36, an var. aurivitta. 

 Var. aurivitta Grt. & Rob. Trans. Am. Ent. Soc, 2, 186, pi. 3, f. 68, Cydosia; 

 Stretch, Zyg. A Bomb., 163, pi. 7, f. 9, Cydosia. 



Bead, thorax, and abdomen bluish or greeuish black, metallic, with 

 white spots arranged as follows: A spot on the vertex; two small dots 

 at base of antennae; a few white scales on front and palpi; collar nearly 

 all white: patagise with two spots each; disk of thorax with five dots. 

 Beneath the legs are maculate with white and numerous whitish hair 

 lighten up the breast. Anal segment of the male ringed with bright 

 fulvous scales. 



Primaries bluish or greenish black, metallic; a golden-yellow* costal 

 stripe from base to a point over the inception of the first transverse 

 band ; a broad, slightly oblique golden transverse band from the me- 

 dian vein down to inner margin, about one-third from base; another 

 still broader transverse band of the same color rather close to and 

 nearly parallel with the outer margin. A subquadrate spot of the same 

 color beyond the middle of the cell, filling the space between the ordi- 

 nary spots which here are obsolete. Between these prominent deep 

 golden markings are white spots and patches as follows: A dot at base; 

 an elongate spot below the internal vein not reaching the first trans- 

 verse band; an elongate spot between vein one and the median vein, 

 also not touching the transverse band; a large round spot in the cell, 

 between the basal band and the discal spot; below this a smaller, also 

 round spot ; beyond the discal spot are two upright somewhat lunate 

 spots before the outer transverse band, and below T these is a large, 

 subquadrate spot near the internal margin. Beyond the outer golden 

 band is a series of white dots beginning with a curved series of three 

 or four small dots on costa, then three larger and somewhat angular 

 spots, the upper much the larger. A white line at base of fringes. 



Secondaries immaculate somewhat darker than the primaries. 



Beneath, primaries with a series of small apical white dots and white 

 fringes, else black, immaculate; secondaries black, immaculate except 

 as apex where the fringes are white marked. 



Expands, .85-.90 inches =21-23 mm . 



Habitat— Texas. 



The variety aurivitta is in every respect identical with the type form 

 save that it completely lacks all the white maculation. Exactly what 

 relation these two forms, which seem so distinct at first appearance, 

 bear to each other is not yet known. They are not sexes, as we have 

 both sexes of each ; they seem to copulate readily, as we have 2 of one 

 and 9 of the other taken in coitu. The variation is not gradual, for I 



