Two-winged flies of the genera dolichopus and hydrophorus collected in Alaska in 1921, with new species of dolichopus from North America and Hawaii /
by J.M. Aldrich
- 18 p.
- Díptera; 3 .
Sobretiro de: Proceedings U.S. National Museum 61 (2446): 1-18. Encuadernado con otros impresos similares