339 



none of our specimens is over 28 mm., but in view of the range of size 

 exhibited by our series of fifteen specimens, we do not regard this as 

 important. Such markings as are still distinguishable correspond with 

 our series. 



The early stages are unknown. 



23. Platyptilia xylopsamma Meyrick. PI. XLIV, fig. 5. 

 Platyptilia xylopsamma Meyrick, Trans. Ent. Soc. Lond. 1907, 488, 1908 (Feb). 



Id., Gen. Ins. C, 12, 1910. 



Id., Wagner's Lep. Cat. pars 17, 16, 1913. 



Barnes & McDunnough, Check List ISO, 1917. 

 Stenoptilia gorgoniensis Grinnell, Can. Ent. XL, 321, 1908 (Sept.). 



Meyrick, Wagner's Lep. Cat. pars 17, 30, 1913. 



Barnes & McDunnough, Check List 151, 1917. 

 The original description is as follows : 



"9. 28 mm. Head light yellow-ochreous sprinkled with whitish, frontal 

 tuft moderate. Palpi 2 1/3 (X eye], pale yellow-ochreous sprinkled with fus- 

 cous, white beneath and at apex. Antennae whitish-ochreous, above with a 

 dark fuscous line. Thorax brownish-ochreous sprinkled with whitish, espe- 

 cially on patagia, which are somewhat expanded towards apex. Abdomen 

 whitish-ochreous, faintly streaked with brownish. Legs whitish, lined with 

 dark fuscous (posterior pair broken). Fore-wings cleft from 3/4, segments 

 broad, termen of first somewhat sinuate, of second very slightly bent, oblique; 

 brownish-ochreous, slightly sprinkled with whitish, dorsal half suffused with 

 pale whitish-ochreous from base to cleft ; costal edge very shortly strigulated 

 with dark fuscous on basal third ; a small round dark fuscous spot in disc at 

 1/3, and another tending to form a transverse mark close before and beneath 

 cleft; a mark of dark fuscous suffusion along costa above cleft, followed by a 

 white mark mostly in costal cilia; cilia pale greyish-ochreous, on tennen with 

 basal half rather dark fuscous, on dorsum with a greyish bar beneath cleft. 

 Hind-wings cleft firstly from before middle, secondly from 1/5; first segment 

 considerably dilated, second moderate; ferruginous-fuscous; cilia pale greyish, 

 within cleft mostly suffused with very pale ochreous, on termen of first seg- 

 ment darker grey on basal half, on dorsum with a series of short dark fuscous 

 scales from base to 2/3. 



"Colorado, U. S., 7000 feet ; one specimen." 



Our single specimen, which has a broken abdomen and only one 

 leg, is from Stockton, Utah, Sept. 6 (Spalding). Mr. Meyrick has 

 examined this specimen and returned it to us as this species, and we 

 have found personally that it is almost an exact comparison with the 

 types of gorgoniensis Grinnell. both of which are males. The type 

 locality of the latter species is South Fork, Santa Ana R., San Ber- 

 nardino Mts., Cal. 



We have no notes on the habits of this species. 



