Since the first description of chondroectodermal dysplasia by Ellis and van Creveld in 1940,1approximately 32 cases of this syndrome have been reported in the literature. Recent articles2-5have reviewed the literature and discussed the salient features of the disease. Characteristically, there is ectodermal dysplasia, chondrodysplasia, and polydactyly, with or without associated congenital heart lesions and other defects. This report is concerned with the 33d case to be described and the results of chromosome analysis done on this patient. To our knowledge there have been no previous reports of chromosome studies in a patient with this syndrome. Report of Case A 3½-year-old white female of Italian descent, was admitted to the Jersey City Medical Center, N.J., on March 8, 1961 because of fever and respiratory distress of 24 hours' duration. Past History.—This patient was the product of a normal full-term pregnancy and delivery; birth weight was 2,778