Tcneina of Colorado. 293 



among them are frequently found in the wings of the same insect, 

 no room is left to doubt that we have only a single species. 



Second joint of the palpi white at the base, followed by alternate 

 annulations of white and dark brown, its apex being white ; third 

 joint with a dark brown annulus followed by a white one and with the 

 apical half dark brown with a longitudinal white line on each side. 

 Head antenme and fore wings to the streaks dark brown, with less of 

 the leaden hue than is found in Gr. e.voptatella, the remainder of the 

 Aving pale golden or straw color, according to the light, and containing 

 sometimes five, sometimes six and sometimes seven white costal 

 streaks; sometimes five on one wing and six or seven on the other. 

 The first is like that of exoptatella and Haworthxina but narrow ; it is 

 dark margined both before and behind ; the second is opposite to and 

 usuallv confluent with the first dorsal streak which is of nearly the 

 same size but is a little wider on the margin though narrower rather than 

 Haworthana; together these streaks usually form a fascia strongly 

 angulatcd behind ; then follow two other slightly oblique costal 

 stieaks dark margined all around and opposite to each of these is a 

 dorsal metalic violaceous spot the first of which (i. e. the second dorsal 

 streak) is placed immediately before the cilia, (this third costal is 

 frequently absent). Between the fourth costal streak and its opposite 

 dorsal spot is another metalic violaceous spot. The fifth costal streak 

 is opposite to the fourth dorsal metalic spot, and between them is a 

 larger metalic violaceous spot, which is sometimes confluent with the 

 fifth costal streak, and sometimes this fifth costal streak is only 

 . represented by a very small violaceous metalic spot while sometimes 

 it is absent entirely. The sixth costal streak is sometimes short and 

 sometimes long enough to almost touch its nearly opposite dorsal 

 metalic spot which is a little elongate, lying along the base of the cilia 

 and is sometimes confluent with its predecessor, the fourth dorsal spot. 

 The sixth costal streak is a little behind the fifth dorsal spot, and 

 there is a metalic spot between them with which the sixth costal is 

 sometimes united. The seventh costal is before the apex, a little 

 hooked backwards and almost unites with it, opposite the sixth dorsal 

 spot which is also hooked backwards. (When any of the streaks are 

 indistinct or absent it is always the third or the fifth costal ones or 

 both, and sometimes one or both of them is present in one wing and 

 absent in the other of the same insect). There is no dark brown 

 streak in the costal cilia projecting backwards, as in some other 

 species, and the cilia have their basal half brown and the remainder 

 silvery, but the dark brown is interrupted by the last dorsal white 

 streak. Under surface and legs rich dark brown; the hind tarsi 



