AMERICAN LEPIDOPTERA. 39 



ing about the form to attract attention. Mr. Grote lias pointed out 

 this character and it remains about the only one that I can find. 



We are not left without positive proof of its distinctness, however, 

 because, as already pointed out, there has been a remarkable break 

 here in the character of the male genitalia, which can be best under- 

 stood and appreciated by comparing figures 24 and 25 on plate 2. 

 The explanation for this peculiar change in structure is yet to be 

 discovered. 



Hydrcecia frigida n. sp., pi. 2, fig. 26, % genitalia. 



Ground color a dull reddish brown, more or less powdered with black. Head 

 and thorax with a purplish gray shading. Primaries with all the markings obscure. 

 T. a. line geminate, darker brown, very irregular, somewhat inwardly bent, but 

 with a considerable outcurve below the submedian vein. The basal space is 

 obscured, and, as the specimen is slightly defective, the basal line cannot be made 

 out. T. p. line geminate, smoky, blackish, very even, a little outcurved over 

 the cell and almost parallel with the outer margin below that point. The inclu- 

 ded space is a little more yellowish. S. t. line irregular, blackish, broken, some- 

 what lunulate below the middle, preceded by a blackish shading, which is out- 

 wardly relieved by a few yellowish scales. As a whole the s. t. space is a little 

 more purplish than the rest of the vying: the terminal space also being somewhat 

 darker than the middle. The apex is yellowish, the fringes are blackish. The 

 median shade is broad, diffuse, blackish, just a little, outcurved below the reni- 

 form. Orbicular brown, small, a little irregular, with a center of the ground 

 color. Reniform moderate iu size, a little oblique, with a brown outline and a 

 brownish central hand. Secondaries smoky gray or blackish, with a vague extra 

 median line and discal lunule. Beneath yellowish, with purplish scales along 

 the costal margins. Both wings with a vague, extra median line and small, 

 black, discal spots. Expanse 1.25 in. ; 31 mm. 



Hab.— Winnipeg, Manitoba, Mr. A. W. Hanliam. 



The type is a male and the only specimen that I have seen. The 

 genitalia are not unlike those of the typical form, but altogether 

 more chunky, while the clasper is shorter and heavier in propor- 

 tion. The male characters resemble those of cerussata ; but the tip 

 is set with much shorter and stouter pointed processes, which can 

 hardly be called spines. The clasper is broad at the base, narrowing 

 abruptly and forming a somewhat irregular hook, which has a 

 jagged tip. Although very much smaller and quite different in 

 appearance, it is evident that the species is allied to limpida, where 

 the combination of superficial characters has placed it. 



Hydrcecia nil i mod a Smith, pi. 2, fig. 27, % genitalia. 

 18il4. — Trans. Am. Ent. Soc, xxi, 7!!. pi. 1. Hydrcecia. 

 Ground color a rusty yellowish red, more or less powdery. Head and thorax 

 with the edges of all the parts tipped with darker scales. Primaries with all tin- 

 markings evident, but not contrasting. Basal line geminate, the space within ii 



TRANS. AM. ENT. SOC. XXVI. MAY, 1S99. 



