Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Blackwelder, R. E., and R. M. Blackwelder. 1948. Fifth supplement 1939-1947 (inclusive) to the Leng catalogue of the Coleoptera of America, north of Mexico [Scolytidae, p. 48-50]. John D. Sherman, Jr., Mount Vernon, N.Y. 87 p.