NO. 1283. REVISION OF SOME NOCTIUD MOTHS—SMITH. 165 



half of the collar white, or at least much paler than the upper portion, 

 and, in good examples, white lines on the patagise. The wings are 

 normally trigonate, of moderate length, the apices well marked, though 

 scarceh^ acute. The median vein is white, and the white streak tends 

 to continue in the interspace between veins 3 and 4. Below this white 

 shade is a more or less diffuse -red, smoky, or blackish shade which 

 extends to the end of the median vein. Above vein 4 from its incep- 

 tion a red, smok}^, or blackish triangular shade extends, starting as a 

 point and broadening outwardh^ until, on the outer margin, it fills the 

 space between vein 4 and ju.st below the apex, where it again ends in 

 a point. 



These characters of maculation are quite oljvious and are easily 

 recognizable; but the male genitalic characters are equally strong and 

 equall}^ distinctive. The harpes are moderately broad at base, ol^long 

 to a point well beyond the middle, and there abruptly narrowed from 

 below. The narrow extension from the upper margin is obtusely bent 

 downward and then suddenly enlarged into a hatchet-shaped tip; the 

 outer edge with a fringe of spinules directed inwardl3\ This is char- 

 acteristic of the group, and occurs nowhere else in the genus. The 

 clasper is usually divided into three processes, of which the lower is 

 more or less spatulate or ligulate; the upper flattened or round, shorter 

 and stouter; the median is a longer, more slender, usually pointed spur. 

 The upper and lower processes are from the same base, the central 

 structure arises separatel3\ 



As to leg structure, in the males the species as a whole agree in 

 having long, thin, hairy fringes on the under side of all the femora. 

 The anterior tibiae are variably fringed outwardly and the tufting is 

 obvious. The median tibi» are not obviously tufted. The posterior 

 tibiae are varial)ly furnished with long thin hair, tending to real tufts. 

 Generally speaking, the northern forms are not so obviously tufted as 

 are the southern species. 



The male antennae are barel}- ciliate and do not have longer lateral 

 bristles on the joints. 



Ruhrvpennis dift'ers from all others in this series and in the genus 

 by having all the darker shadings bright, pinkish red. The male 

 genitalia while after the group type have the claspers quite different 

 from those of any other species. The lower process is long, C3din- 

 drical, and pointed; the upper a broad, short beak. 



The home of this species is in Texas, but it extends northward into 

 Missouri. 



AJhiUnia has dark smoky or black secondaries in both sexes, which 

 may be a little lighter at the extreme base only. It is on the whole a 

 small species, the primaries dark luteous in ground and the smoky 

 shades broad and difl'use. The discal dots may or m^j not be 

 prominent. 



