220 U. S. NATIONAL MUSEUM BULLETIN 216 



with whitish; palpi brown; tegula brown, 3^ellow basolaterally; legs 

 fulvoferruginous, the coxae usually a little infuscate basally and the 

 apex of front femur, tibiae basally, and middle and hind tarsi basally, 

 faintly paler. 



Type: d" , Mill Valley, Calif., July 30, 1948, H. and D. Townes 

 (Washington, USNM 63658). 



Paratypes (24 cf, 209): From California (Avancino, Bear Valley in 

 Marin Co., Berkeley, Carlsbad, Diamond Creek in Alameda Co., 

 Fort Ord, Fullerton, Glendale, Hawthorne, Ingleside, Inverness, 

 La Jolla, Lake Tahoe, Mill Valley, Oakland, San Diego, San Fran- 

 cisco, San Lorenzo, Santa Paula, and Watsonville). Dates on 

 the specimens are mostly in April, May, June, July, and September. 

 Those outside of these months are: January 3 at Berkeley; January 4 

 at Santa Paula; February 7 at Watsonville; February 18 at Fort Ord; 

 March 13 at Oakland; March 15 at San Lorenzo; March 25 at 

 Berkeley; August 26 at Ingleside; October 6 at Inverness; October 26 

 at San Francisco; November 22 at Berkeley and at Oakland; and 

 December 15 at Carlsbad. 



Adults seem to be on the wing throughout the year. Reared speci- 

 mens are as follows: 3d\ from leaf tyer on Rosa, Avancino, Calif., 

 July 1939, R. M. Bohart; d", from Platynota stultana, San Lorenzo, 

 Calif., Mar. 15, 1941; <?, from carnation worm, Hawthorne, Calif., 

 Sept. 21, 1940, R. M. Bohart; 9, from Argyrotaenia franciscana , San 

 Francisco, Calif., Apr. 8, 1925, H. H. Kiefer; 9, from A. franciscana , 

 W T atsonville, Calif., Feb. 7, 1921, E. O. Essig; 9, from tortricid pupa, 

 San Francisco, Calif., Apr. 20, 1909, F. X. Williams; cf , from A. 

 citrana, Santa Paula, Calif., Jan. 4, 1951, Adkins; 9, from A. citrana, 

 Fullerton, Calif., June 28, 1951, Adkins; and 2cf, from tortricid, 

 Carlsbad, Calif., Dec. 15, 1949, R. J. Pence. 



This subspecies is in California, in the Upper Sonoran and Transi- 

 tion faunas. 



25. Exochus tenebrosus, new species 



Figures 189,1; 193,f 



Front wing 4.2 to 4.5 mm. long; combined face and clypeus of male 

 about 0.90 as high as the face is wide, of female about 0.70 as high 

 as the face is wide, rather strongly convex in a vertical plane, more 

 strongly convex horizontally; facial punctures rather coarse and 

 sharp, their interspaces about 0.8 their diameter in male, about 1.0 

 their diameter in female; point of interantennal process with about 

 a 90-degree angle; frons weakly swollen medially; median 0.6 of apical 

 margin of clypeus truncate ; lower margin of mandible weakly convex 

 to make the taper of the mandible a little abrupt apically, the apex 

 of the mandible moderately narrow, its lower tooth short; outer face 

 of mandible with sparse, rather coarse punctures; hind ocellus sep- 



