AMERICAN LEFIDOPTERA. 



25 



This species is quite readily recognizable by the distinct con- 

 trast between the median space and the rest of the wing; the pale 

 t. p. line being rather distinctly marked, quite narrow and well 

 defined. The antenme of the male are distinctly brush like, the 

 joints are well marked, the lateral processes almost equal to the 

 diameter of the joint in length and with tuftings of soft, bristly 

 hair. The sexual pieces of the male are of the same general type 

 as those previously described, but differ obviously in detail. The 

 harpes narrow rather regularly toward the tip, which is cut off 

 obliquely. There is a somewhat irregular, broad basal clasper, and 

 toward the tip there is a beakdike process which terminates acutely. 

 The species seems to be not uncommon where it occurs, ami it varies 

 in the ground color, which ranges from a dull, dirty, clay yellow to 

 a bright, clean, reddish brown. The largest specimen seen is a male 

 from Washington, in the Graef collection. 



Hydrcecia pallescens n. sp., pi. 1, fig. 13, % genitalia. 



In general appearance and character this species resembles medialis, of which I 

 at first considered it a variety. The chief difference, superficially, is in a de- 

 cidedly paler ground color and an appearance as though there was a white wash- 

 ing over the entire surface. The ordinary spots are much more vaguely defined — 

 in fact they can hardly be said to be defined at all, and in some cases are merely 

 shadings, a little paler than the ground color. The t. p. line is not so definite 

 outwardly and is rather a shade, which merges gradually into the usually darkei 

 s. t. space. The antennas of the male have the processes on the joints longer 

 and the bristles more prominent than in the other species. The sexual organs 

 are in general like those of the preceding species; but the clasper is very long. 

 semicylindrical, very broad at the base, with the edges irregular towards the tip. 

 Expanse 1.50-1.90 in. ; 37-48 mm. 



Hub. — Calgary, August 21st, September 1st. Fort Klamath, 

 Oregon, August 21st. 



Hydroecia senilis Smith, pi. 1, fig. 14, % genitalia. 



1894. — Smith, Trans. Am. Ent. Soc, xxi, 73, pi. 1, Hi/droecia. 

 Ground color a dull, rusty, red-brown, the veins darker. Head and thorax 

 without obvious markings. Primaries without contrast, all the lines present, 

 only a little darker than the ground color, narrow. Basal line geminate, extend- 

 ing to a suhmedian vein, but feebly marked, except on the costa. T. a. line sin- 

 gle, slender, as a whole upright, hut outwardly bent, curved or angulated be- 

 tween the veins. T. p. line geminate, slender, almost even or only a little marked 

 on the veins; the inner line the darker and more obvious of the two, the space 

 between the lines unusually broad. S. t. line indicated by the slight difference 

 in shade between the darker terminal and lighter s. t. space. The median line 

 is indicated by a vague dusky shading through the center of the wing. Orbicu- 

 lar small, round or nearly so, concolorous or a little paler, not definitely outlined. 

 Ren i form broad, oblique, a little irregularly kidney shaped, more rusty yellow 



TRANS. AM. ENT. SOC. XXVI. (4) MAY. 1899. 



