March, 1903.] BuSCK : NoTES ON YPONOMPX'TID.E. 49 



Cerostoma aleutianella Beiitenmiillcr. 



Cfrosloiiia nU'uliant-lin liKU rKNMri.UEK, Can. Ent., XXI, p. 27, 18S9. 

 Cerostoma aleutianella Rii.EY, Smith's List Lep. Bor. Am., No. 5197, 1891. 

 Cerostomi aletifianella Dyar, Can. Ent., XXXII, p. 4I, 19CO ; Bull. U. S. 

 Nat. Museum, 52, No. 5498, 1903. 



The uni(iue type of the species is in U. S. National Museum, type 

 No. 42S. 



Hijbitat : Aleutian Islands, Alaska. 

 Cerostoma angel icella, sp. nov. 



Antennre white with sharp black aniiulalioiis. Palpi, head and thorax white ; 

 shoulders yellowish. Forewings white with striking fawn-brown ornamentation. 

 Extreme costal base brown ; at basal third of costa begins a broad brown band curved 

 downwards and outwards, which reaches the costal edge again at the middle of the 

 wing and encloses a small semicircular white costal spot. At its lowest point this 

 band approaches and sometimes joins a dorsal brown spot, which begins at the base 

 of the wing and curves upwards at basal third. On the middle of the dorsal edge 

 begins an outwardly oblique brown streak ending on the end of the cell in an in- 

 wardly curved hook. This streak sometimes connects with a large more or less 

 y-shaped brown costal marking at apical third, which encloses a small triangular 

 white costal spot and which nearly reaches across the wing to a small brown spot at 

 the anal angle. Apex and a marginal spot below apex brown. The markings are 

 sharply defined and edged with slightly darker scales of brown. 



Six specimens, from which I have described this species, show some variation in 

 the shade as well as in the form of the brown markings. In one specimen they are 

 quite dark brown ; in the otJiers, which seem as well preserved, though they may be 

 faded, the markings are light golden brown. Cilia white with brown pencils in the 

 apical part. Hindwings shining ochreous white ; cilia yellowish. Legs and under- 

 side of body white, tarsi slightly dusted with dark scales. Alar expanse, 19-22 mm. 



Habitat: Los Angeles, California (Co(iuillett ). 

 U. S. National Museum, type No. 6765. 



Cerostoma oliviella, sp. nov. 



.\ntenn;\: sdvery white with narrow dark brown annulations. Labial palpi yel- 

 lowish-brown, mottled on the outside with dark brown scales ; tuft small, terminal 

 joint roughened in front. Head and thorax light brown. Forewings olive-brown, 

 closely and uniformly sprinkled with dark purplish-brown or blackish atoms, which 

 give the wings a purplish sheen. On the fold is a small deep black spot and at the 

 end of the cell is a small aggregation of black scales, hardly forming a defined 

 spot. Cilia yellowish. Hindwings light silvery fuscous; cilia yellowish. Legs 

 light brown mottled with black. Alar expanse, 21. 5 mm. 



Habitat: Williams, Arizona ( Schwarz and Barber). 

 U. S. National Museum, type No. 6752. 



