54 Harry Scott Smith 
Ancistromma aurantium (Fox). 
1891. Larra aurantia Fox, Entomological News, ii, p. 194. 
1893. Ancistromma aurantia Fox, Proceedings of the Academy of 
Natural Sciences of Philadelphia, p. 490. 
Both sexes, West Point and Lincoln. 
Ancistromma sericifrons H. S. Smith. 
1906. Ancistromma sericifrons H. S. Smith, Entomological News, xvii, 
p. 247. 
Six males taken at Glen, Sioux county, during August. Most 
of the specimens do not have the apical abdominal segments black, 
as is the case with the type. 
Ancistromma confertum Fox. 
1893. Ancistromma conferta Fox, Proceedings of the Academy of 
Natural Sciences of Philadelphia, p. 494. 
Numerous specimens from West Point, Pine Ridge, and Glen, 
during June, July, and August. 
Ancistromma bruneri H. S. Smith. 
1906. Ancistromma bruneri H. S. Smith, Entomological News, xvii, 
p. 248. 
Eight specimens from West Point (type locality) and Glen, 
June to August. This may turn out to be only a black abdomened 
variety of conferta, which, excluding its color, it very much 
resembles. 
Ancistromma vegetum Fox. 
1893. Ancistromma vegeta Fox, Proceedings of the Academy of Nat- 
ural Sciences of Philadelphia, p. 497. 
This pretty black species is found only in the northwestern 
portion of the state. Both sexes taken at Glen during the month 
of August. 
Ancistromma divisum (Patton). 
1879. Larra divisa Patton, Bulletin of the U. S. Geological Survey, 
V, p. 368. 
1893. Ancistromma divisa Fox, Proceedings of the Academy of Nat- 
ural Sciences of Philadelphia, p. 495. 
Also limited to the northwest; Glen, both sexes (P. R. Jones, 
H. S. Smith). 
376 
