254 U. S. NATIONAL MUSEUM BULLETIN 216 



ferruginous, the upper hind part of mesepisternum, often a large part 

 of prepectus, and sometimes median lobe of mesoscutum blackish; 

 hind coxa, first trochanter, and femur fulvous, the apex of first tro- 

 chanter and of femur white; hind second trochanter white; hind tibia 

 white with an elongate apical infuscate triangle on front and back 

 faces; hind tarsus white, the apex of its first four segments narrowly 

 darkened, its fifth segment infuscate with its base paler. 



Female: Black. Apical half of clypeus dark brown; mandible light 

 brown; palpi, tegula, and hind corner of pronotum, white; meta- 

 pleurum and meso thorax fulvoferruginous, a dorsoposterior area on 

 mesepisternum and much of prepectus black and sometimes the 

 mesoscutum infuscate medially; front coxa and middle trochanters 

 whitish; middle coxa and front and middle femora fulvous, whitish 

 apically; front and middle tibiae pale fulvous, whitish above; front 

 and middle tarsi stramineous, whitish basally and a little darkened 

 apically; hind coxa, first trochanter, and femur fulvous, the apex of 

 first trochanter and of femur white; hind tibia white with a light brown 

 stripe beneath, its apex brown except on dorsal edge; first two seg- 

 ments of hind tarsus whitish, brown beneath and apically; last three 

 segments of hind tarsus dark brown. 



The cocoon of the type specimen is fusiform, 7.5 mm. long, and 3.8 

 mm. wide. It is of open irregular mesh, of coarse, light brown silk, 

 with loosely looped strands on the outside. 



Specimens: 29, Camino, Calif., June 27 and 30, 1948, H., M., G., 

 and D. Townes (Townes). 9, Los Angeles Co., Calif. (Washington), 

 cf, Menlo Park, Calif., January 1905, F. Hornung (Washington). 9, 

 Muir Woods, Calif., Feb. 23, 1947, U. N. Lanham (Ann Arbor). d\ 

 Mountain Home, San Bernardino Co., Calif., Sept. 12, 1953, J. C. 

 Hall (Davis). 9, beat from Ceanoihus cuneatus, Pinnacles National 

 Monument, Calif., Apr. 6, 1951, E. J. Taylor (Townes). 9 (type) 

 reared from either Epeira strix or E. scolopetaria, Santa Cruz Mts., 

 Calif., A. Koebele (Washington). 9, Tanbark Flat, Los Angeles Co., 

 Calif., July 10, 1952, W. V. Garner (Berkeley). d\ Glacier, Wash., 

 Aug. 9, 1925, A. L. Melander (Cambridge). 



This species occurs from Washington State to southern California. 



5. Polysphincta eboripes, new species 



Figure 324,e 



Front wing of male 4.3 to 4.8 mm. long, of female 5.0 to 6.8 mm. 

 long; metapleurum with a few hairs anteriorly and posteriorly, some- 

 times also with a very few hairs discally. Structure otherwise as 

 described for P. koebelei. 



Black. Mandible and apical half of clypeus stramineous or brown ; 

 palpi, tegula, and hind corner of pronotum, white; legs ivory white, 



