A revision of the type material of some species of Hypolobocera and Ptychophallus (Crustacea: Decapoda: Pseudothelphusidae) in the National Museum of Natural History, Washington, D.C., with descriptions of a new species and a new subspecies. Proceedings of the Biological Society of Washington, 107(2), 21 July 1994: 296-307. 297 [Zoological Record Volume 131]