AMERICAN LEPILOFTERA. 233 



however, a number of others not enumerated here and not avaikible 

 for dissection. This one example shows no practical difference from 

 those of series two, hence does not aid in recognizing a species. It 

 differs sufficiently in size and general tint to be considered a race, 

 ranging the Central and Southern Rocky Mountains and extending 

 into the North Plains. The second series, lucina, ranges the North- 

 ern Rockies, into British Columbia and the foot hills and plains 

 fronting them. The name altua may be used for this form or race. 



A modification of this series occurs in five males and two females 

 labelled " Utah," from the Henry Edwards' collection. These are 

 all more sharply marked, with a paler basal line and a more obvi 

 ously geminate t. a. line. The gray seems to have a peculiar dead 

 tinge, so while there is plenty of contrast it is not a live or bright 

 relief. I consider this a form or variation of altua, and the exact 

 locality is probably Salt Lake City. 



Two specimens of the genitalia were mounted and accord practi- 

 cally with those of the series as already described. 



The fourth series consists of six males and seven females from 

 Glenwood Springs, Hall Valley, Yeta Pass and Durango, Colorado ; 

 and one female from Senator, Arizona. These specimens expand 

 from 25 to 27 mni., most of them 26 or over, and they are therefore, 

 as a whole, larger than any others. The dates for these specimens 

 are June, July and August ; the dates for the third series covering 

 the same territory are July, August, September and October; there 

 is thus a chance that this form is seasonal and really the same as 

 altua. Comparing males the raaculation of this series is decidedly 

 more contrasting, the basal space is decidedly lighter, almost always 

 with a reddish shading. The s. t. space is gray, and the gray tends 

 to, in some case does involve, the terminal space. The reddish shad- 

 ing in s. t. space is diffuse, and, while it is sometimes confined to the 

 region opposite anal angle, is usually spread so as to tinge the en- 

 tire space. The reniform is distinctly kidney shaped in most exam- 

 ples of both sexes, and is always proportionately larger than in any 

 of the preceding series. I place some stress upon this point, because 

 in altua the reniform is uniformly oblong, upright, a little larger 

 superiorly, the angles rounded. There is a little kidney shape of 

 course, but nothing like the decided form found here. In the fe 

 male the tendency to obscure the s. t. space is quite as strong as in 

 altua, and the reddish shade is quite as much restricted. 



Three permanent mounts were made from this series, and, except 



TRANS. AM. ENT. SOC, XXVII. (30) JUNE, 1901. 



