2(34 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



at the extensions. A whitish line at the base of the fringes, which 

 are interlined with brown. Secondaries with the disk crossed by 

 three obscure dusky lines, the intervals between which may be gray 

 powdered. The outer black line extends from anal margin to apex 

 with a slight incurve, usually a little indented on the veins and out- 

 curved between, preceded by a darker shading which becomes most 

 obvious at anal angle, followed by a paler shading which, in the male, 

 lends to occupy most of the terminal area. There is a distinct, black, 

 thread-like terminal line, with more or less marked white dots at the 

 incisions, and there is a pale line at the base of the fringes. Beneath 

 smoky, with more or less obvious gray shadings and powderings; 

 sometimes almost immaculate, more often with only discal spots; 

 often with an exterior common line and rarely, on secondaries, two 

 or three darker lines across the disk. 



Expands, 1.40-1.80 inches= 35-45 mm. 



Habitat. — Colorado, May and June, Manitoba, Denver, Glenwood 

 Springs; Arizona in June, Palmerlee and Williams; Texas in March ; 

 probably all collected by Belfrage. 



7^5.— U.S.N.M., Coll. No. 12028 ; Rutgers College Collection ; co- 

 types, Coll. Barnes. Ottolengui, Brooklyn Institute. 



A series of 23 males and females is at hand for comparison and 

 shows a considerable range of variation. The large females from 

 Texas resemble cingulifera so closely at first sight that I was not 

 surprised to find specimens so placed in collections. The uniformly 

 dusky reniform of this species, however, separates it at a glance. 

 Some of the males at first seem referable to rubiata, and there is one 

 form, occurring in both sexes, in which the median space becomes 

 yellowish brown and a resemblance to mlnerea is established. The 

 tendency is for the females to become uniformly dull brown, without 

 obvious gray shadings, but with the basal and subterminal spaces 

 conspicuously dark. In all cases the transverse strigillation is dis- 

 tinct or even conspicuous, but it is least marked in the specimens with 

 yellow brown median space. 



The spinulation of the middle tibia is sparse, but the spines are 

 long and are easily distinguishable in the vestiture. There are no 

 conspicuous femoral tuftings in the male and on the middle legs there 

 is no mass of specialized scales. 



The genitalia of the male are only a little asymmetrical, both 

 harpes very strongly down-curved and a little enlarged near the tip, 

 having the general type of rnbi and rubiata, but differing in detail as 

 shown in the figures; it does not resemble cingulifera at all. 



In the female the genitalia are asymmetrical. The depressions on 

 the upper surface of the penultimate segment are distinct, but not 

 marked by discolorous scales. On the under side the lobes are alto- 

 gether different in outline. The one to the right is not more than half 



