204 Journal New York Entomological Society. [Voi. x. 



difference between them. . Mr. Beutenmiiller's type is, unfortunately, 

 a female, not a male, as stated in the original description, so I can- 

 not compare the genitalia. Those of iniriisella are peculiar. The 

 anal plate ends in a single tapering spine ; the side pieces are broad, 

 triangular, the upper angle bent in a rounded projection with four 

 coarse black spines below it. 



Ethmia discostrigella Chamb. 



Not uncommon in the foothills of the Rocky Mountains, Arizona 

 and southern California. The fore wings have the gray-white ground 

 color thickly overlaid with blackish scales, so that it only appears in 

 streaks along the lower edge of the cell, mixed with the short black 

 dashes. The male genitalia have the anal plate broad, rounded, con- 

 vex, bent down sharply from the base, broadly cleft at the tip, pale 

 brown and thin ; the side pieces are broadly triangular, curved in- 

 ward at the upper angle. 



Huachuca Mts., Ariz., May 8-23 (Barnes); Glenwood Springs, 

 Col. (Barnes); Arizona (Morrison, Walsingham's coll.); Utah, 

 June (Koebele?) ; Los Angeles, Calif. (Coquillett) ; Monument Park, 

 Col., July 19, 1877 (Coll. C. V. Riley) ; Beulah, New Mex. (Cock- 

 erell) ; Fort Grant, Ariz. (Hubbard) ; Santa Clara [Col.?] June 27, 

 1875 (Wheeler survey) ; Manitou, Col., May 2, 1891 (Dyar) ; Cen- 

 tral City, Col. (Caudell) ; Sedalia, Col., June 15, 1901 (Dyar&Cau- 

 dell); foothills above Golden, Col., May 13, 1901 (Dyar & Caudell). 



Ethmia semitenebrella, sp. nov. 



Marked like discostrigella, the black streaks larger and more con- 

 spicuous, costal half of wing shaded in "blackish, inner half nearly 

 pure gray white. This is probably only a variety of the preceding. 

 The distribution is the same. The male genitalia do not differ. U. 

 S. Nat. Mus., type No. 6621. 



Fort Grant, Ariz., July 20 (Hubbard) ; Colorado (coll. Beu- 

 tenmiiller) ; Huachuca Mts., Ariz., July 1-7 (Barnes) ; Glenwood 

 Springs, Col., July 24-30 (Barnes) ; Los Angeles, Calif., Aug. (Co- 

 quillett) ; Chiricahua Mts., Ariz., June 26 (Hubbard); Williams, 

 Ariz., Dept. Agric, No. 9450, July 31, 1901 (E. A, Schwarz). 



Under the Department of Agriculture, Insectary number 9450, 

 Mr. Schwarz collected the larvre on Ccrcocarpus parvifolius. They 

 are of Pyralid shape, moderately slender, cylindrical, tapering a little 

 behind. Feet normal, the abdominal ones long and slender as in 



