During the season of i909 the writers found an interesting ascomycete growing abundantly in the vicinity of Austin, Texas. On attempting to identify the species it was traced to Urnula geaster Peck,' which was collected at Austin, in i893, by Dr. L. M. UNDERWOOD and sent to Mr. C. H. PECK for identification, but the characters observed did not agree with PECK'S description in several important points. For this reason a package of fresh specimens was sent to Mr. PECK, who replied that they were the same as the original Urnula geaster which he had previously described, but that his description was lacking in a number of important points, since only dried specimens had been available for making the original diagnosis.. This description has been corrected by Mr. PECK2 in his recent report, in accordance with the examination of fresh specimens sent to him by the authors. Since this fungus has recently been made the basis of a new genus, Chorioactis,3 and the material used for the study consisted only of dried herbarium specimens, the careful study of its anatomy was undertaken to determine the validity of its separation from Urnula.