346 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 part s 



and basal half of first segment black; wings subhyaline; apical 0.2 

 of first tergite, all of tergites 2-4, and basal 0.2 ± of fifth tergite 

 ferruginous. 



Female: Black, including the palpi, flagellum, and tegula. Front 

 femur, tibia, and tarsus fulvous brown, the femur fuscous basally and 

 the tarsus darker apically ; base and apex of hind femiu", apex of middle 

 femur, and sometimes anteroventral part of middle tibia ferruginous 

 or tinged with ferruginous; middle and hind tarsi fuscous, brownish at 

 the joints; wings faintly infuscate; apical 0.33 of first tergite, all of 

 tergites 2-4, and basal 0.4 of tergite 5, ferruginous. 



Type: 9, Kerrville, Tex., Apr. 5, 1959, W. K. M. Mason (Ottawa). 



Paratypes: cT, Fredericksburg, Tex., Apr. 17, 1959, W. R. M. 

 Mason (Ottawa). cT, Kerrville, Tex., Apr. 4, 1959, W. R. M. Mason 

 (Ottawa) . 



4. Trychosis coxalis, new species 



Figure 385 



Front wing 3.7 to 5.5 mm. long; second segment of male flagellum 

 about 2.35 as long as mde, of female flagellum about 3.7 as long as 

 wide; punctm-es on lower part of temple small, separated by about 1.8 

 their diameter; hind femm- of male about 5.1 as long as deep, of female 

 about 5.0 as long as deep. Agrees structurally with T. similis except 

 for slightly shorter flagellar segments, average smaller size, and minor 

 other differences. 



Male: Black. Palpi, sometimes spot on front of scape, and tegula 

 white; front coxa white, fulvous behind; middle coxa fulvous, white 

 apically in front; front and middle trochanters entirely or mostly 

 white; front and middle femora and tibiae fulvous, the tibiae white 

 dorsally; scutellum usually with a ferruginous stain; hind coxa ful- 

 vous, or sometimes more or less brownish; hind trochanters and femur 

 fulvoferruginous, the second trochanter largely whitish and apex of 

 femur wealdy infuscate; hind tibia dark brown; all tarsi white, their 

 fifth segments pale brown; wings hyaline; abdomen fulvoferruginous. 



Female: Black. Palpi, tegula, and incomplete band on flagellum 

 that occupies about 6 segments, white; basal part of flagellum brownish 

 in front; front and middle legs, hind coxa, hind trochanters, scutellum, 

 and abdomen fulvoferruginous, the front and middle tarsi brownish 

 apically; hind femur fulvoferruginous, its apex a little infuscate; hind 

 tibia dark brown ; hind tarsus white or whitish, its fifth segment, basal 

 half of fu'st segment, and sometimes more or less of fom'th segment, 

 brown; wings hyaline. 



The ferruginous coxae and white palpi and tegula distinguish this 

 species. 



Type: 9, Moorestown, N.J., June 24, 1938, H. and M. Townes 

 (Washington, USNM 63805). 



