620 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



and leopardus in possessing pale yellow forewings contrasting with 

 dark hindwings. In leoyardus the grayish white ground color of the 

 forewings contrasts with the dark hindwings. In occidens there is 

 very little contrast in ground color between the forewings and hind- 

 wings, both of which are rather dark. 



In regard to the genitalia, and specifically in regard to the form of 

 the cucullus of the harpe, there are four variable types. The first type 

 is exhibited by laticapitanus and occidens which have an identical 

 genital structure (figs. 144, 145, 146). The cucullus is quite variable, 

 differing as much within either of the two subspecies as it does between 

 them. The second type of cucullus occurs in leopardus (fig. 147). 

 Here, the shape of the cucullus is fairly stable, although it is obviously 

 closely related to the fh'st type. A third type, found in heinrichi (fig. 

 148), is quite distinctive and easily permits one to separate this sub- 

 species from the others. In this case, the cucuUus is unstable, varying 

 in each of the five specimens on hand, although none of its variations 

 approaches those found among the other subspecies. The fourth type 

 of cucullus, exhibited by clarkei (fig. 149), is also distinctive but vari- 

 able. In heinrichi and clarkei the cucullus shows a tendency toward 

 the development of the dorsal portion of the apex, while in the other 

 subspecies the cucuUus exhibits a ventral development of the apex 

 with a corresponding reduction or shortening of the dorsal portion. 



The two members of this complex which may most likely intergrade 

 are occidens and its form, leopardus. At least one specimen has the 

 general size and color pattern of occidens but a cucullus shaped like 

 that of leopardus. This would indicate that either the habitus, cucul- 

 lus, or perhaps both tend to intergrade between these two. It is 

 cm-ious that Busck, who described both at the same time with one 

 following the other on the same page, failed to indicate their close 

 relationship. Instead, he related occidens to kearfotti (Dyar) and 

 leopardus to punctellus (Busck). 



Key to Subspecies of the laticapitanus Complex 



(Based on Males) 



1. Each antennal segment with two complete rings of scales. 



30. laticapitanus (Walsingham) 

 Each antennal segment with only one complete ring of scales 2 



2. Forewings grayish white or dark; cucullus of harpe of first (figs. 144, 145) or 



second (fig. 147) type, with dorsal portion of apex considerably reduced and 



ventral portion correspondingly produced distad 3 



Forewings pale yellow; cucullus of harpe of third (fig. 148) or fourth (fig. 149) 

 type, with dorsal portion of apex developed further distad than ventral 

 portion 4 



