Dr. Horvath has recorded the fact that the bed-bug described under the various names, hemiptera, rotundata, macrocephala and horrifer, are all the same species, and that this insect must be termed hemiptera, as that is the oldest name. The insect iu question is widely distributed over the tropics of both the Old and New World. The type specimen is still preserved in the Copenhagen Museum, and through the kindness of the authorities there I have recently been able to examine it, and can confirm Dr. Horvath's views. The type example of Clinocoris foedus, Stal, which was described from an example taken in Columbia, is in the Stockholm Museum, and was also submitted to me. This insect differs from hemiptera by having the lateral margin of the pronotum slightly but distinctly explanate and curved upwards. Whether this character is due to the shrinkage of the example, or whether it is really there, it is impossible to tell. In any case, should foedus, Stal, utimately prove to be the same as hemiptera, the name would simply form one more synonym of this species, though in all probability, when more material is discovered, foedus will be shown to be a distinct species.