56 Harry Scott Smith 
1892. Tachytes sericatus Fox, Ibid., xix, p. 247. 
One male, West Point, one female, Ashland, June (L. Bruner). 
Tachytes fulviventris Cresson. 
1865. Tachytes fulvivéntris Cresson, Proceedings of the Entomological 
Society of Philadelphia, iv, p. 466. 
1892. Tachytes fulviventris Fox, Transactions of the American En- 
tomological Society, xix, p. 243. 
This extremely variable species is numerous in the western 
portion of the state, and has been taken as far east as Ashland. 
Both the typical form and the black abdomened male are found, 
the latter however is rare. Flies during July and August at flow- 
ers of Solidago and Sagittaria. 
Tachytes pepticus (Say). 
1837. Lyrops peptica Say, Boston Journal of Natural History, i, p. 371. 
1859. Lyrops peptica Say, Leconte edition, ii, p. 754. 
1892. Tachytes pepticus Fox, Transactions of the American Ento- 
mological Society, xix, p. 242. 
The most common species of the genus, but rarely taken in the 
eastern portion of the state. Carns, Glen, Dundy county, Gor- 
don, Warbonnet canyon, Crawford, West Point, Malcolm, Lin- 
coln. Flies from June to August, on flowers of Euphorbia, Cle- 
ome, Petalostemon, Ratibida, Verbena, Monarda, and Solidago 
spp. 
Tachytes harpax Patton. 
1880. Tachytes harpax Patton, Proceedings of the Boston Society of 
Natural History, xx, p. 394. 
1893. Tachytes harpax Fox, Proceedings of the Academy of Natural 
Sciences of Philadelphia, p. 499. 
Rarely found as far west as Nebraska. One male taken at 
West Point, July 8 (L. Bruner). 
Tachytes mandibularis Patton. 
1880. Tachytes mandibularis Patton, Proceedings of the Boston So- 
ciety of Natural History, xx, p. 393. 
1893. Tachytes mandibularis Fox, Proceedings of the Academy of 
Natural Sciences of Philadelphia, p. 499. 
Glen, Malcolm, Ashland, Nebraska City, Weeping Water, Lin- 
coln, thus ranging across the entire state. Flies during July and 
August. 
378 
