26 JOHN B. SMITH. 



than the balance of the wing. Claviform narrow, pointed, extending to aboul 

 the middle of the median space, concolorous or only a little paler. Secondaries 

 smoky, paler toward the base. Beneath pale, with a tendency to a reddish or 

 yellowish shading, somewhat powdery, the disc of the primaries tending to 

 smoky. No outer lines in any of the specimens before me. Expanse 1.50-1.60 

 in. : -IT 40 inm. 



Huh. — Colorado, Bruce. 



The insects were probably collected in the mountains not far west 

 of Denver. The species is a very obscure one and resembles some- 

 what a very much washed out atlantica. It has also somewhat the 

 appearance of a Pachnobia, and would easily pass for a member of 

 that genus. In the male the antenna 1 joints are marked, but not 

 prominently so, and they are laterally set with tufts of soft hair. 

 The male genitalia are imperfect in the specimen under examina- 

 tion and the tip of the harpe was broken off. There is a double 

 clasper, the outer being broad at the base and the edges irregular, 

 terminating in a sharp point. The inner is a small curved hook 

 arising from a rather broad base and narrows rapidly to a sharp 

 point. Very few examples of this species have been seen. 



Ilyriroecia serrata Grote, pi. 1, fig. 15, £. genitalia. 



1880.— Grote, No. Am. Ent , i, 94, Gortyna 



1881.— Grote, Bull. Geol. Surv., vi, 269, Gortyna. 



1893. Smith. Bull. 44 U. S. Nat. Mus.. 179, Hydroecia. 

 Color a rather bright reddish yellow, the ground being yellow, washed with 

 red to a variable extent. As a rule the head and thorax are quite obviously yel- 

 low. The red washing becomes evident at the sides of the palpi, on the front of 

 the head, then at the sides of the collar, at its tip, on the thoracic tuftings, and 

 then on the patagke which are quite frequently tipped with purplish. The tuft 

 at the base of the abdomen is also quite usually purplish. The primaries have 

 the basal space predominating in yellow, and yellow is also the shade extending 

 along the costa and at the apex of the wing: else the red is most obvious. The 

 basal line is very distinct, geminate, red-brown. T. a. line geminate, irregular, 

 more or less broken, almost upright to the submedian interspace and then out- 

 curved to the margin. The t. p. line is geminate, not so well defined, the 

 included space yellowish, the inner defining line a little crenulated, the outer 

 imperfect, but more even so far as traceable. Beyond this line the veins are 

 narrowly dark marked. S. t. line, obsolete in most specimens: but in souk 

 traceable by a few darker scales, emphasizing a difference between the s. t. and 

 terminal spaces. There is a pale line at the base of the fringes, which are a lit- 

 tle darker than the rest of the wing. The yellow apex has been already men- 

 tioned. The ordinary spots are white and contrasting. Orbicular round or 

 nearly so, varying in size and usually with a central dot of the ground color. 

 Reniform large, unusually broad, with a central yellow lunule surrounded by 

 seven, more or less well-separated, white spots. The breaking up of the white 

 -.pots i> caused by the dusky veins which pass through the white filling. Clavi- 

 form very broad and short, white, divided by a narrow central line which ex- 



