Classification of the Cryphalinae with descriptions of new genera and species.
Contributors: United States. Dept. of Agriculture.
Series: Report /U.S. Dept. of agriculture -- no. 99; Report (United States. Dept. of Agriculture) -- no. 99.
Publisher: Govt. Print. Off.
Published: 1915
Place of publication: Washington
Language: eng
Number of pages: 75
Subjects: Ambrosia beetles.
Notes: Contribution from the Bureau of entomology.

The 4th contribution toward a monograph of the scolytid beetles. Previous numbers were issued as follows: no. 1, The genus Dendroctonus and no. 3, Preliminary classifications of the superfamily Scolytoidea are pts. 1 and 2 of U.S. Dept. of Agriculture. Bureau of Entomology. Technical series no. 17; no. 2, List of generic names and their type-species in the colepterous superfamily Scolytoidea is in Proceedings of the U.S. National Museum, v. 48, no. 2066, p. 115-136.