Observations on certain North American Neuroptera
By: by H. Hagen ; translated from the original French ms., and published by permission of the author, with notes and descriptions of about twenty new species of North American Pseudoneuroptera by Benj. D. Walsh
Publisher: [s.n.]
Published: 1863
Place of publication: [s.l.]
Language: eng
Translated from: fre
Number of pages: 272
Subjects: Neuroptera; Pseudoneuroptera
Notes: Cover title.

Offprint from Proceedings of the Entomological Society of Philadelphia, Oct. 1863.