V °l889. J PROCEEDINGS OF THE NATIONAL MUSEUM. 471 



In tabular form, the differences are shown as follows: 



Ordinary snots, 1-irge, pale ringed; orbicular oblique. 



Lobes of collar inferiorly separated, leaving a triangular black patch; median 



lines narrow, pale ixfikma 



Lobes of collar not separated; median lines black cynica 



Ordinary spots more or less indefinite, never pale ringed. 



S. t. line marked by a dark preceding shade, median lines when visible, fairly 

 even; reuiforin usually clean, white marked ; color usually brown red, 



KN'EKVIS 



S. t. liue precede 1 by long, sagittate dashes; median lines when visible very 

 irregular, dentate; reniform obsolete or dirty white marked; sordid dark 

 brown VIRGULA 



S. t. line distinct, pale, somewhat diffuse outwardly; red brown, black powdered ; 

 median lines distinct, accompanied by broad pale shades irrorata 



Luteous, pale ; median lines never accompanied by paler shades puekilis 



Orthodes infirma Gn. 



Gn., Noct, I, 185-2, 375; Walk. C. B. Mus., Het. X, 44G, Orthodes; Morr. C. E., 1874, 6, 

 •25*2; Harv. Buff. Bui., in, 9. 



Even mouse gray, with a more or less obvious reddish tinge. All 

 the lines distinct, uarrow, pale, even. Ordinary spots pale ringed, 

 sometimes connected. Basal half line rigid, upright. T. a. line evenly 

 oblique, with a uarrow, dark outer shading. T. p. line angulate over 

 reniform, then evenly inwardly oblique to hind margin, preceded by 

 a row of black venular dots. S. t. line very distinct, even, rarely with 

 accompanying darker shade. A row of dark terminal lunules, mar- 

 gined by a zigzag terminal liue. Orbicular large, oblique; reniform 

 broad, kiduey shaped. Secondaries even, fuscous, variable in shade 

 from yellowish to blackish. Beneath dull smoky. Secondaries with 

 outer line and discal spot. Head and thorax concolorous. Lobes of 

 collar inferiorly separated, leaving a triangular space, filled by a black 

 patch. There is a faint thoracic crest, and loose, indistinct abdominal 

 tufts. The genitalia of the male are peculiar by the tuft of long silky 

 hair on the harpes; the latter are broad, narrowing to an irregular, 

 obtusely pointed tip. The clasper is double, consisting of a curved, 

 beak-like process, behind which is a straight corneous process, squarely 

 truncate at tip. Expands 1.20 to 1.40 inches (30 to 35"""). 



Habitat.— New England and Middle States, Missouri, Texas. 



An easily distinguished form, common in the Middle States. The 

 triangular black patch at base of collar and the lengthily tufted harpes 

 of the male are distinctive. 



Orthodes cynica Gn. 



Gn. Noct. 1852, 1, 375 ; Wlk. C. B. Mus., Het. x, 443, Orthodes ; Morr. C. E., 1874, 6, 252, 

 nimia Gn., 1852, I, 376; Wlk. C. B. Mus. Het. X, 443, an sp. dist.; Morr. C. E., 



1874, 6, 252 (pr. syn.). 

 candens Gn., 1852, I, 37G ; Wlk. C. B. Mus. Het. X, 444, an sp. dist. praec. ; Morr. 



C. E., 1874, G, 252 (pr. syn.). 



Mouse gray to bright brownish red; the vestiture somewhat 

 "squaminose." Median lines darker, usually black; t. a. liue pre- 



