508 U. S. NATIONAL MUSEUM BULLETIN 216 



6. Xorides (Xorides) boharti, new species 



Figure 316,b 



Male: Front wing 6.3 to 9.2 mm. long; temple with moderately 

 coarse, very close punctures the interspaces of which tend to shape into 

 rugulae, these rugulae weak and vertical on dorsal part of temple, 

 stronger and oblique on ventral half of temple ; erect hairs on flagellum 

 about 0.2 as long as flagellar diameter; first tergite very stout, about 

 1.55 as long as wide; second tergite rather coarsely reticulate-punctate. 



Head, body, and appendages entirely black; wings subhyaline. 



Female: Front wing 8.5 mm. long; sculpture as described for the male; 

 flagellum a little enlarged at apex, its apical segment long, the peglike 

 setae at the bend distinctly clavate; front tibia slightly swollen, with 

 four thornlike bristles on its front side; first tergite very stout, about 

 1 .35 as long as wide. 



Coloration as in the male. 



Type: cf, Mix Canyon, Solano Co., Calif., Mar. 4, 1936, R. M. 

 Bohart (Washington, USNM 63734). 



Paratypes: 9, Alum Rock Park, Santa Clara Co., Calif., Mar. 22, 

 1956, Don Burdick (Berkeley), cf, Mill Valley, Marin Co., Calif., 

 February 1926, M. C. Van Duzee (San Francisco). 5 d\ same data as 

 type (Townes and Davis). 



7. Xorides rileyi (Ashmead) 

 Figures 313,e; 314,h; 316,c; 328,k 



Xylonomus rileyi Ashmead, 1889, Proc. U. S. Nat. Mus., vol. 12, p. 450; 9 . 



Type: 9 , Missouri (Washington) . 

 Xylonomus (Xylonomus) ruficoxis Rohwer, 1913, Proc. U. S. Nat. Mus., vol. 45, 



p. 354; 9. New synonymy. Type: 9 , Apalachicola, Fla. (Washington). 

 Xylonomus (Xylonomus) lepturae Rohwer, 1913, Proc. U. S. Nat. Mus., vol. 45, p. 



534; 9. Type: 9, Cherrydale, Va. (Washington). 



Male: Front wing 4.6 to 8.0 mm. long; temple polished, with small 

 scattered punctures that are separated by an average of four times 

 their diameter; erect hairs on flagellum about 0.35 as long as flagellar 

 diameter; first tergite about 3.1 as long as wide, with a faint constric- 

 tion just beyond the spiracle; second tergite with moderately coarse, 

 rather dense punctures and fine, weak transverse rugulosity. 



Black, sometimes with an indistinct ferruginous tinge. Clypeus 

 blackish brown; palpi light brown; their first segment and basal part 

 of their second, dark brown; tegula brown; apex of coxae and second 

 trochanters more or less stramineous; extreme apex of femora and basal 

 0.2 of tibiae, white. Hind coxa sometimes fulvous with its apical part 

 often more or less fuscous. 



Female: Front wing 9.5 to 14 mm. long; sculpture of temple and of 



