222 ENTOMOLOGICAL NEWS [Oct., '31 and more prominent black veins than either of those species. On the under side it differs from haitensis in the broad black border of the primaries and the dark red-brown color of the secondaries with the prominent black anal spot ; from radians it differs on the under side in the ground color and the lack of the pale veins. -* Cerambycinae from Kartabo, Bartica District, British Guiana (Coleop.) By SAMUEL H. WILLIAMS, University of Pittsburgh. In the joint collections of the writer and the New York Zoological Society, the Cerambycinae are represented by twenty-five genera, and thirty-seven species. Additional species taken at other places in British Guiana are not included in this list, which is only a contribution to the Kartabo fauna, which has been so intensively studied by Dr. William Beebe and his associates. Material collected in the hinterland of British Guiana and in the other Guianas indicates a wide diversification and distribution of coleopterous insects in the region between the Amazon and Orinoco rivers, with a localization of certain species, and an extensive range characterizing others. Most of the work done in this region has been more or less scattered with the emphasis having been placed on Central American, Amazonian and Cayenne l faunae. British Guiana connects j these regions and offers untold possibilities in distributional studies. The writer has spent considerable time in an attempt to make an intensive, systematic survey of the Coleoptera of the lower jungle area in British Guiana and in an endeavor to obtain some information as to the effects of altitude on the general distribution of species. Specimens collected between the coast-land and Mt. Roraima, which is a considerable distance back of Kaieteur Falls, show that some of the species taken at Kartabo are quite generally distributed, while other species are confined to the narrow strip of dense jungle along the coastal lowlands. 1 French Guiana.