190 PROCEEDINGS OF THE NATIONAL MUSEUM vol.90 



Female genitalia. — Genital plate narrow, more so laterally. Os- 

 tium small, elongate. Ductus bursae membranous except an elon- 

 gate, curved, sclerotized area on one side about the middle ; inception 

 of ductus seminalis just before ostium. Bursa copulatrix large with 

 well developed signum. 



Alar expanse, 17-21 mm. 



Type.—\J. S. N. M. No. 52075. 



Type locality'. — Skyline Ridge, Mount Baker District, Wliatcom 

 County, Wash., altitude 6,200 feet. 



Food plant. — Lomatium angustatuni (Coult. and Rose) St. Jolin. 



Remarks. — Described from the 5 type, 9 $ and 6 9 paratypes all 

 from the type locality. All were collected by the author. Paratypes 

 in the United States National, Canadian National, and H. H. Keifer 

 collections. 



The larvae, from which the type series was reared, were collected 

 on August 17 and 18, 1933. From the larvae collected 25 pupae were 

 obtained. From these pupae 16 moths emerged. Pupation began 

 on August 21 and ended August 24; emergence of the moths began 

 on August 31 and ended September 2. 



The host of this species is a small plant growing on open gravelly 

 slopes or on rock outcrops where considerable fracturing of the basic 

 rocks has taken place. The basal leaves of the plant are frequently 

 closely appressed to the ground and it is in these leaves that the larva 

 does most of its feeding. Frequently, however, the more erect leaves 

 are involved by the tubes and webs spun by the larva. The silken 

 tubes in which the larva lives are constructed among the broken 

 rocks and soil and frequently extend several inches down cracks in 

 the rock, thus providing an excellent hiding place for the larva when 

 not feeding. 



This species is clearly related to multifidae but may readily be 

 distinguished from that species by its genitalia. 



DEPRESSARIA TOGATA Walsingham 



Plate 37, Figure 200B 



Depressaria togata Walsingham, Ins. Life, vol. 1, p. 254, 18S9. — Riley, in 

 Smith, List of Lepidoptera of Boreal America, No. 5282, 1891. — Busck, Proc. 

 U. S. Nat. Mus., vol. 24, p. 746, 1902; m Dyar, U. S. Nat. Mus. Bull. 52, 

 No. 5885, 1903.— KEARroTT, in Smith, Check list of the Lepidoptera of Boreal 

 America, No. 6428, 1903.— Busck, Proc. U. S. Nat. Mus., vol. 35, p. 200, 

 1908. — Baenes and McDunnough, Check list of the Lepidoptera of Boreal 

 America, No. 6474, 1917. — Meybick, in Wytsman, Genera insectorum, fasc. 

 ISO, p. 172, 1922.— Forbes, Cornell Univ. Agr. Exp. Stat. Memoir 68, p. 242, 

 1923. — IMcDuNNOUGH, Check list of the Lepidoptera of Canada and the 

 United States of America (Part 2, Microlepidoptera ) , No. 8397, 1939.— 

 Gaede, in Bryk, Lepidopterorum catalogus, pt. 92, p. 294, 1939. 



