(_f_) Among the collections of the American Museum there is an impression of a small amphibian foot obtained from Phoenix Tunnel, Pennsylvania. The impression is in hard black slate very similar to the slate of the Cannelton region. It is possible that the specimen may have been obtained from the Cannelton beds, since they would be expected to occur at Phoenix Tunnel. The impression is rather small. It is the footprint of a 5-toed animal, probably of the right foot, since no amphibian (465) so far is known from the Coal Measures with 5 digits on the hand. The first digit is short and thick, with a large ball at its base. The foot measures from the posterior edge of the palm to the tip of the longest digit 12 mm. The length of the first digit is 7 mm. The impression differs in some respects from the impressions so far known from the Coal Measures, but no attempt will be made to assign it to a species. It may have been made by either a branchiosaurian or a microsaurian, but more probably the latter, since we do not know of any of the former animals from the Cannelton beds, or in fact from any of the Coal Measures beds excepting the Mazon Creek shales. The specimen is No. 2872 of the American Museum. [Illustration: Fig. 2. Distribution of Coal Measures Amphibia in North America. 1. Linton, Ohio, near Yellow Creek P. O., Jefferson County, Ohio, on the banks of Yellow Creek, near the Ohio River, 16 miles north of Steubenville. 2. Mazon Creek shales, Grundy County, Illinois, near Morris. 3. "Clepsydrops shales," Salt Fork Creek, Vermilion County, Illinois, near Oakwood, on Tate farm, 8 miles west of Danville, Illinois. 4. Danville, Illinois, coal where the type of _Proterpeton gurleyi_ Moodie was found. 5. Breeze, Illinois, where Dr. J. A. Udden, in 1907, found a fragment of an amphibian phalange on the dump of the Cooperative Coal Company. 6. Pitcairn, Pennsylvania, 15 miles east of Pittsburgh. 7. Cannelton, Pennsylvania, Beaver County, Cannelton slates, Kittanning formation, 45 miles northwest of Pittsburgh. 8. Fairfield, Iowa, where Dr. J. A. Udden found remains attributed by Dr. Eastman to _Pleuroptyx clavatus_ Cope. 9. Louisville, Pottawatomie County, Kansas, where Dr. S. W. Williston discovered remains of Mastodonsaurus in the Coal Measures. 10. Washington County, Kansas, source of type of _Eobaphetes kansensis_ Moodie, from the Coal Measures. 11. Osage City, Osage County, Kansas, amphibian footprints from the Coal Measures. 12. Winfield, Kansas, source of Cricotus material. 13. Lander, Wyoming, in Wind River Carboniferous. 14. Pictou, Pictou County, Nova Scotia, 84 miles northeast of Halifax. Source of _Baphetes planiceps_ Owen. 15. Joggins (Joggins Mines), Cumberland County, Nova Scotia, 4 miles from River Hebert. Source of _Hylerpeton_ and _Dendrerpeton_ faunas.