Mr. J. V. Harrison, B.Sc., has recently collected some coral limestones from two localities in Venezuela, which he has entrusted to me for identification and description. The corals indicate the existence in eastern Venezuela of a rich fauna, for the specimens include fragments of seven genera. Some of the corals are too small for specific, and some for certain generic determination but as there appears no likelihood of further material being collected, it seems advisable to describe what is available to direct attention to an interesting and varied coral fauna. The two localities represented are Port Piritu, on the shore of the great bay west of the town of Barcelona in eastern Venezuela, and Punceres to the west of the Gulf of Paria between the two branches of the Rio San Juan and due west of the lower course of that river. A map, for which I am indebted to the Anglo-Persian Oil Co., through Mr. S. Lister James, shows that the position of Punceres is at about 10° N., 631/2° W. The corals were collected during surveys made for that Company, which has paid for the accompanying plate.