202 B. NKUMOEGEN AND H. G. DYAR. 



Transverse bauds iioriually present. 



Discal dot sui'roiinded by a light cinereous space. 



Scarcely any black shading on primaries ipoiiicete. 



Two long black dashes var. leliler. 



Whole middle of wing black to outer margin var. ciiiereof roiis. 



Discal dot on the ground color. 



Primaries pale green at extreme base Uilicorili!!*. 



Without green tints. 



Discal dot lunate ; size small. 



Transverse lines distinct, black, coarsely undulate apiCHlis. 



Lines faint, reddish, finely undulate iiitida. 



Discal dot round; size large leptiiioicles. 



Si. coiiciuiia Abbott and Smith. 



1797. — Abbott and Smith, Lep. Ins. Ga. vol. ii, pi. 85. Phalxna. 



semirufesce-HS Walker. 

 1865.— Walker, Cat. Brit. Mus. Pt. xsxii, p. 424. Edema. 



semirufescens Walker. 

 1865. — Walker, Cat. Brit. Mus. Pt. xsxii, p. 450. Hatima. 

 1892.— Smith, Can. Ent. vol. xxiv, p. 135. 

 * salicis Hy. Edwards. 

 1877. — Hy. Edwards, Proc. Cal. Acad. Sci. vol. vii, p. 121. Heterocampn. 



riversii Behr. 

 1890. — Behr, Proc. Cal. Acad. Sci. (2) vol. ii, p. 94. Dryocampa. 

 Apical portion of wing cinereous, centre yellowish in % , dull olive-brown in 

 9 ; region along internal margin dark ferruginous brown ; markings absent, or 

 very faint, veins blackish. A black basal dash and round discal dot, the latter 

 sometimes absent. Secondaries white in %, cinereous gray in 9 • with a gray 

 spot at anal angle. Expanse 33 — 36 mm. 



Hab. — Atlantic States westward; California; Idaho (Packard). 



S. e.'Kiiiiia Grote. 



1881.— Grote, Bull. U. S. Geol. Surv. vol. vi. p. 275. Oedemnsia. 

 Thorax gray, patagia tipped witb. brown. Resembles concinna. but is larger 

 and the wings more pointed. The wing is more shaded with gray, less distinctly 

 yellowish, centrally in the %, so that the sexes are closely similar. The red 

 shade along internal margin is less distinct, being partly blackish. Transverse 

 maeulations absent. Discal dot minute or absent. Secondaries pale grayish in 

 % , darker in 9, with indications of a whitish band and dark spot at anal angle. 

 Expanse 42 — 50 mm. 



Hab. — Northern Atlantic States, Pacific Northwest. 



S. peraugiilata Hy. Edwards. 



1882. — Hy. Edwards, Papilio vol. ii, p. 125. Oedemasia. 

 Thorax as in eximia ; costal half of wing toward apex bright gray, the veins 

 black lined, snbapical black dashes present; lower half of wing and base yel- 

 lowish, slightly marked. Transverse lines obsolescent, the t. a. discernible, 

 blackish, lunulate, pulverulent. T. p. line represented by some reddish marks. 

 A black basal dash ; discal dot lunate, followed by a black cloud. Secondaries 

 white, with black spot at internal angle. Rather variable, the wing sometimes 

 quite uniformly colored. 

 Hab. — Colorado, Utah. 



