The Collembola of New Mexico. X. Entomobryinae: Drepanocyrtus, Willowsia, Lepidocyrtus, Pseudosinella. XI. Entomobrya, Orchesella, Lepidocyrtinus. Entomological News Lancaster, 74 1963: 225-231, 243-251. [Zoological Record Volume 100]