95 



logical Survey, F. G. Sanborn); Central Missouri (Riley); Waco, Tex., 

 March 16 (Belfrage); Grand Rapids, mouth of Saskatchewan, July 14 

 (Scudder); Rocky Mountains (Grote); Colorado (Mead); Dallas, Tex. (Boll. 

 Mus. Comp. Zool.); Victoria, Vancouver Island, July, common (Crotch, Mus. 

 Comp. Zool.); Albany, Oreg. (J. Holleman) ; California (Behrens); Mendo- 

 cino City, Cal. (A. Agassiz, Mus. Com. Zool.); Niles, Cal., February 

 (Behrens); Sanzalito, Cal., January 6-26, February 9-16 (J. Behrens). 



This is our most common form south and west of New England (where 

 it is replaced by //. trifasciata), occurring in the Southern States in March 

 and in the Middle and Western States in April and May. It differs 

 from //. trifasciata by its longer fore wings, more pointed apex, and oblique 

 outer margin, and its usually reddish instead of greenish bands, in the often 

 more sinuate, smoky, submarginal band, and, in those specimens which most 

 nearly approach trifasciata, i. e., without reddish tints, the middle light band 

 is narrower, while the arrangement of the markings is very much the same. 

 The narrow and pointed fore wings are the best distinguishing mark. To 

 H. sordidata it is closely allied in the shape of the wings, but differs entirely 

 in the style of the markings; the latter not having the definite basal, middle, 

 and extradiscal black lines which characterize H. californiata and trifasciata. 



An interesting variety -(pi. 8, fig. 32), named by Professor Zeller Cidaria 

 blstriolata has been received from Saint Louis, Mo., through Mr. Riley. 

 It is a bred specimen, and in excellent condition. The black lines are heavy 

 and almost suffused. The general tint of the wing is olive-green, with no 

 lines or distinct markings of any sort between the middle band and the basal 

 line; the middle band is nearly white, not reaching the costal edge, which is 

 heavily lined with black, connecting with the apical line ; the band is deeply 

 scalloped, sending out a large two-scalloped projection in the middle of the. 

 wing, and below becoming very narrow, the points of the scallops on opposite 

 sides in the submedian space nearly dividing the band into isolated round 

 patches. A specimen from Kentucky bears a general resemblance to this, 

 but the base of the wing and the median band have a distinctly yellowish 

 tinge. A similar form also occurs in Texas. The specimen received from 

 Mr. Riley was bred from a pupa found under bark April 26. I have com- 

 pared Zeller's type (from Texas) in the Museum of Comparative Zoology 

 with Riley's specimen, and find no difference between them. 



In small examples, the median white band is apt to be very wide and 



