Crabill, R.E. Jr. (1951): On the true identity of Geophilus huronicus Meinert and the presence of Geophilus longicornis Leach in North America (Chilopoda: Geophilomorpha: Geophilidae). Canad. Ent., 83: 314-315.
Crabill, R.E. Jr. (1952): A new cavernicolous Nampabius with key to its Northeastern American Congerners (Chilopoda: Lithobiidae). Entomological News, 63 (8): 203-205.
Crabill, R.E. Jr. (1952): A new subspecies of Otocryptops gracilis (Wood) from the Eastern United States, together with remarks on the status of Otocryptops nigridius (McNeill) and a key to the species of the genus now known to occur east of the Rocky Mountains (Chilopoda: Scolopendromoprha: Cryptopidae).Entomological News, 63 (5): 123-129.
