Notes on the Mansfield Museum's Mexican Reptiles Collected by Wilkinson HOBART M. SMITH and M. B. MITTLEMAN, University of Rochester, Rochester, N. Y., and New York, N. Y. The herpetological collections made by Edward Wilkinson in Mexico, chiefly in Chihuahua, have been the subject of a number of scattered notes as well as two papers by E. D. Cope (1879: 261-263; 1885: 282-287). The museum at Mansfield, Ohio, founded by Wilkinson (Smith and Mittleman, 1943, Amer. Midl. Nat., in press) contains a number of specimens not hitherto reported. Present are 9 species of snakes, numbering 55 specimens, and 10 species of lizards, numbering 192 specimens. There are no amphibians. The specimens are, for the most part, in glass-stoppered museum jars, amply supplied with formalin or alcohol, or both. Some are faded by long exposure to light, but most of them are in fair condition. They are labelled solely by means of cardboard tags, attached to wire supports that in turn are either loosely or firmly attached to the bottles. Through the years some transfers of labels have taken place, but these have been obvious for the most part, as apparently the only other herpetological material in the collection is from Ohio and Florida. Some specimens are associated with U. S. National Museum tags, and belong in the series sent by Wilkinson to the Museum for study by Cope. The entire series was catalogued upon receipt, and later a part of it was returned to Wilkinson. No records of the species returned was made. To Mr. Fred E. Elder, Curator, and Mr. F. Thane Shaw, Custodian, we are much indebted for permission to study the collection at the museum.