Crabill R. E. Jr., 1969: Tracheotaxy as a generic criterion in Himantariidae, with proposal of two new Bothriogastrine genera (Chilopoda: Geophilomorpha). 9 pp. Smithsonian Contributions to Zoology
150
6
SCZ 156
Corpuz-Raros L. A., Cook E. F., 1974: A revision of North American Capitophorus van der Goot and Pleotrichophorus Börner (Homoptera: Aphididae). 143 pp. Smithsonian Contributions to Zoology 156: 1-143.
690
28
SCZ 550
Courtney G. W., 1994: Biosystematics of the Nymphomyiidae (Insecta: Diptera): Life history, morphology, and phylogenetic relationships. 41 pp. Smithsonian Contributions to Zoology