^°l89o'"'] PROCEEDINGS OF THE NATIONAL MUSEUM. 433 



clasper is short, thick at base, rather abruptly narrowing to a rather 

 acute tip. In color the species is dull fuscous, with black markings 

 and veins. The orbicular is elongate oval and oblique. 



Xylophasia perpensa Grt. 



18S3. Grt., Can. Ent. 13,229, Hadena. 



Dark blackish fuscous, the markings black. A short basal streak; 

 another along inner margin. T. a. line blackish, diffuse geminate, out- 

 wardly oblique, forming a long tooth in submediau interspace, then 

 abruptly inward, and again forming an outward dent below vein 1; the 

 latter vein is black marked to t. p. line. A black shade connects the 

 median lines in the submedian interspace. T. p. line geminate cre- 

 nate, outvvardly bent over cell, then obliquely and rather evenly to 

 inner margin. The included space is somewhat pale powdered. T. p. 

 line indefinite, marked only by a contrast in shade; the terminal space 

 being darker. A row of terminal dark dots. Fringes scalloped, at hind 

 angle retreating. Claviform barely indicated. Orbicular elongate 

 oval, oblique, black ringed, concolorous. Eeniform upright, somewhat 

 narrowing superiorly; incompletely dark ringed; jialer outwardly. 

 Secondaries smoky fuscous, darker outwardly, fringes paler. Outer 

 line and discal dot reflected from under side. Head and thorax con- 

 colorous with primaries ; collar with a black line. Beneath pale, gray- 

 ish fuscous, powdery toward costal margin and apices; an outer com- 

 mon line and discal spot more distinct on secondaries. 



Expands 32 millimetres=1.30 inches. 



H ABITAT. — Arizona. 



The distinctive features have been already sufficiently pointed out. 



Group cariosa. 



The distinctive character of this group is the indentation of the s. t. 

 line on veins 3 and "4, forming a distinct W, and this character is 

 common t6 all the species of this group, as well as to those of the group 

 inordinata. There are no other characters peculiar to this group only, 

 which is nevertheless a compact and closely related one. All the 

 species except cuculliformis and genialis, in which the maculation is 

 obsolete, have a slender black basal streak, and another, parallel, along 

 the hind margin close to base, forming the inner part of t. a. line at that 

 point. The genitalia of the S agree with the general characters given 

 in the description of the genus, but present individual differences of 

 some interest. 



GuculUformis, with which I head the list, is very readily distinguished 

 by the long narrow wings, recalling the genus from which this species 

 derived its name, as well as by the absence of the ordinary transverse 

 maculation. The $ is not known to me. 



Verbascoides is closely allied, but evidently distinguished by the dis- 

 tinct black shade below the middle of the wing, and the outer margins 

 Proc. N. M. 90 28 



