spongilla-flies
Subtitle: with special reference to those of the western hemisphere (Sisyridae Neuroptera)
By: by Sophy I. Parfin and Ashley B. Gurney.
Contributors: Gurney, Ashley B.
Series: Proceedings of the United States National Museum
Publisher: Smithsonian Institution
Published: 1956
Place of publication: Washington
Language: eng
Number of pages: 529
Subjects: Flies
Notes: Offprint from Proceedings of the United States National Museum, v.105 (Smithsonian publication no.3360).

Cover title.

Bibliography: p. 524-529.