NORTH AMKRICAN LEPIDOPTEKA. 159 



The above is almost entirely from Mr. Grote's description. Sj)eci- 

 mens examined l)y me agree very well with this characterization and 

 vary in the line of obscui-ity, the paler i)atches of primaries some- 

 times becoming almost obliterated. The genitalia are distinctive ; 

 the upper plate divides into two broad, flattened, curved hooks, en- 

 larged basally, constricted in the middle and again enlarging toward 

 the tip, where they diverge, and end in a rather obtuse tip ; the lower 

 plate forms two slender hooks, widely sejiarated at base, outwardly 

 curved and with a long, acute tip. The side piece and clasper are 

 very much as in dlo, but the latter is shorter, proportionately thicker. 

 The species is not common in oar fauna, and the early stages are 

 undescribed. 



D. ertwardsii Butl., Paji. i, lOo, Ancen/x ; Grt., New List, 1882, IJilophonota ; 

 Edw.,® Eut. Am. 3, l(i5. 



Head, thorax and primaries deep fuscous brown ; head darker on vertex, more 

 yellowish at sides. Thorax with the centre of the crest l)lackish, the sides more 

 yellowish, tegulie lined with deeper brown, the lines often indistinct. Abdomen 

 with a dorsal gray stripe with a narrow darker central line, margined each side 

 with a broad black line ; on each side of this line the segments are banded with 

 pale, whitish gray and black. Primaries u.sually paler, often yellowish along 

 inner margin, extending sometimes nearly to middle of outer margin ; the macu- 

 lation fragmentary and extremely difficult to describe. It consists of very 

 strongly dentate transverse lines, usually only marked by black venular dots, 

 except through the paler portion of wing; veins between these dots marked 

 with paler scales, and there is a transverse series of pale venular dashes through 

 the subtermiual space; a row of black terminal Innules. Secondaries yellow at 

 base, the outer third blackish brown, margin grayish. Beneath gray, pow'dery, 

 with an outer dentate common line. Secondaries yellow along internal margin, 

 and with a transverse line nearer base iind not quite reaching the inner margin. 

 Expands 3 — 3.50 inches; 75 — 88 mm. 



Hub.— Florida. 



Easily recognized, but not easily described. The species varies in 

 depth of coloration, some specimens seen being almost purplish ; 

 there is always a pale shade along the course of the transverse pos- 

 terior line below the middle of the wing. It is the only dark species 

 in our fauna with yellow secondaries. 



The genitalia are distinctive. The up{)er plate has the forks di- 

 verging to the middle ; thei'e bent, and converging somewhat to the 

 tip, which is rather acute; the lower plate has the hooks shorter, 

 much more slender, converging toward the middle, there curved and 

 divei'ging to the tip. The side pieces are long, rather narrow, form- 

 ing a somewhat acutely rounded tip; clasper very small, flattened, 

 with a straight tij), before which it is notched on the uj)pcr side. 



