134 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



brown, the first two, obliquely one above the other, before middle, 

 the third at end of cell ; from costa, just before apex, around termen 

 a series of six or seven dark brown spots; cilia strongly mixed with 

 dark brown. Hind wing pale grayish fuscous; cilia pale straw 

 yellow with a faint, narrow, brown subbasal line. Legs straw yellow ; 

 anterior femora and tarsi strongly overlaid with brown; tarsi of 

 middle and hind legs tinged with brown. Abdomen brownish above 

 with posterior edges of segments and ventral surface straw yellow. 



Male genitalia. — Harpe moderately broad; costa heavily sclerotized 

 to a point just before cucullus ; clothing of hairs confined to the apical 

 half except for a group of coarse hairs on base just below the costa ; 

 clasper divided, one arm, paralleling the sacculus, short and acutely 

 pointed, the other, long, reaching to a point just below the costa, with 

 a short, blunt lateral projection. Anellus a broad, sclerotized plate 

 with an elongated troughlike articulation on which the aedeagus 

 rests. Vinculum rounded. Aedeagus stout, bent sharply at middle 

 and tapering gently to a blunt point. Transtilla a narrow band with 

 hairy lateral lobes. Gnathos an oval, spined knob. Tegumen rounded 

 at apex. Socii fleshy flaps with a few hairs. 



Ferrbale genitalia. — Genital plate broad, rather heavily sclerotized 

 around the ostium. Ostium deeply concave. The edges inunedi- 

 ately around the ostium and the posterior portion of the ductus bursae 

 are spinulate. Just before the ostium the ductus bursae is constricted. 

 Ductus bursae short, membranous, unarmed on inner surface, widen- 

 ing gently into the large bursa copulatrix. Signum a large, broadly 

 oval, slightly sclerotized plate. 



Alar expanse, 15-18 mm. 



Type. — In the British Museum. 



Type locality. — Texas. 



Food plant. — Unknown. 



Distribution. — ^Western United States. 



United States records 



California: Laguna Beach, 9 ; Loma Linda, San Bernardino County, ? (Oct. 

 &-15) ; San Diego, 2 $ $ (Nov. 21, 1921, Karl R. Coolidge), S $ S (May 

 24-30), 9 (June 16-23), 9 (April 16-23), 9 (IV-26-08, Geo. H. Field). 



Colorado: Colorado Springs (Fountain Valley School), 3 $$ ( 20-31- VIII-32, 

 A. B. Klots) ; Denver, $ (Oslar) ; 2 9 9 (no data). 



Iowa: Iowa City, 9 (G. G. Ainslie). 



South Dakota: Elk Point, 9 (Aug. 1918, C. N. Ainslie). 



Texas: 2 $ $ (X-06, H. Lacey). 



Remarks. — This very distinct species cannot be confused with any 

 other described North American Martyrhilda, but it closely resembles 

 the European culcitella. 



