A hightemperature origin of life has been proposed, largely for the reason that the hyperthermophiles are claimed to be the last common ancestor of modern organisms. Even if they are the oldest extant organisms, which is in dispute, their existence…

The available sequences of genes encoding the enzymes associated with histidine biosynthesis suggest that this is an ancient metabolic pathway that was assembled prior to the diversification of the Bacteria, Archaea, and Eucarya. Paralogous duplications, gene elongation, and fusion events…

Uranocoris maculatus is described as a new species from New Guinea. Comparison is made with U. suavis Walker, which is the only previously known species of the genus. Habitus view illustrations and drawings of the male genitalia are provided to…

Heisshygia rolstoni n. sp.. H. amplissima n. sp., and H, cephalota n. sp., are described from New Guinea. A key is provided to distinguish the known species. The presence of ocelli in Heisshygia is shown to correct the original description.

Cysticercosis results from ingestion of the eggs of the tapeworm Taenia solium. Reduction of the incidence of human and swine cysticercosis requires identification and treatment of individuals who carry the adult tapeworm. T. solium and Taenia saginata eggs cannot be…