THE OCCURRENCE of vascular anomalies of the central nervous system is well known and extensively treated in the literature. We are interested in presenting a discussion of those peculiar to the spinal cord and its most intimate covering, the pia-arachnoid.1 Nine cases are presented. We wish to show that these lesions can be suspected and diagnosed clinically on the basis of certain characteristic presenting features which in and of themselves may appear to be atypical. We wish, further, to point out that with the use of contrast roentgenography some of these lesions can be diagnosed with greater certainty before operation.2 Recently an excellent work with particular reference to the number of cases reported (67) was compiled by Wyburn-Mason.2d REPORT OF CASES Case 1. —A white man aged 27 was first admitted to the University Hospital on Jan. 30, 1938, with the questionable diagnosis of multiple sclerosis. His