A generic classification of the Nearctic sawflies
Subtitle: (Hymenoptera, Symphyta)
By: with seventeen plates, by Herbert H. Ross
Series: Illinois biological monographs -- v. 15,no. 2
Published: 1937
Place of publication: Urbana, Ill
Language: eng
Number of pages: 173
Notes: "Contribution no. 188 from the Entomological laboratories of the University of Illinois, in cooperation with the Illinois State natural history survey."

Descriptive letterpress on versos facing the plates.

On cover:  University of Illinois bulletin.  vol. XXXIV, no. 94.  July 23, 1967.

"An elaboration of a thesis submitted...for the degree of doctor of philosophy in entomology in the Graduate school of the University of Illinois in 1933."

Bibliography:  p. 117-126.