THE CANADIAN ENTOMOLOGIST. 47 



PaJ>aipema rigida. 



The list of food-plants can be increased to include Heliaiithus 

 tuberosus, Arctium lappa and Zizzia aurea. Tho preferred food-plant, 

 instead oi Heliarithus decapetahis^ as stated by the writer in this magazine, 

 Vol. XLI, p. 1x6, should be revised to Heliopsis heliafithoides. The 

 latter is by far most accepted, and seems very generally bored under 

 favourable conditions. This plant does not occur at Rye, N. Y., and here 

 rigida flourishes to some extent in the roots o( Zizzia, which is not nearly 

 so well suited for such a larva. The examples in Arctium were plainly 

 cases of substitution. 



An undescribed western species of Hydroecia has been referred to the 

 writer, for which the following name is proposed : 



Hydroecia rep I eta, n. sp. . 



Head and thorax clothed with admixture of yellow and reddish or 

 garnet, hair-like scales, abdomen darker. Fore wings brown, of a nearly 

 even shade, probably with red or garnet tinge when fresh ; basal area 

 rather large, yellow, defined by a double inwardly-waved line at vein I, 

 beyond this point an elongate white dot ; antemedial line double, filled in 

 with yellow ; median shade faintly discernible, blackish ; orbicular large, 

 round, white, with central speck of brown ; claviform rounded, white, 

 bisected by brown hair line ; reniform large, a yellow bent bar surrounded 

 by while spots divided by brown hair lines ; postmedial line double, 

 ill-defined, illuminated near costa by yellow scales, bends outwardly past 

 reniform, thence with ogee curve to inner margin ; subterminal line 

 irregularly waved and generally parallel to postmedial ; postmedial area 

 probably shows purplish-sheen when fresh ; terminal space faintly dashed 

 with yellow between veins, and a yellow blotch at apex. Hind wings 

 solid, dull black, with pale rufous fringes. Beneath the wings are 

 smoky-black on a luteous ground, having a garnet suffusion at costal and 

 terminal areas ; a black medial line and discal spots. Expanse, 34-36 mm. 



Habitat. — Huachuca and Chiris Mts., Paradise, Ariz., Aug. 21 to 

 Sept. 13. Collector unknown. 



Three specimens are at hand through the courtesy of Prof. J. B. 

 Smith, who retains a male and female cotype. 



The species is an exict counterpart in maculation \d{ the fore wing of 

 the well-known serrata, which seems common at Denver, Colo. The one 

 male specimen is minus antennse, so it cannot be stated if it has this 

 pectinated as holds with its ally. The darker tone and black secondaries 

 easily separate them, however, though the genitalia of the new form does 

 not differ markedly from serrata, which has been figured by Prof. Smith. 



