H. Zweifel 1953 Rana tarahumaras Sycamore Canyon, Pajarito Mts, Santa Cruz Co., N.M. July 21, 1953 Downstream from the pool pictured in Stelling's book, where I took this species in 1950, the tarahumaras habitat is much better developed. There are many pools two feet and more in depth, great boulders bordering the pools and shade from walnut, sycamore and willow trees. These deep, shady pools with overhanging ledges which provide underwater shelter seem to provide optimum habitat conditions for this species. Three adults were taken of six seen. Several large larvae were seen and four captured. One of those not captured had all four legs developed. No small larvae was found. Probably breeding takes place in mid-summer, the larvae taking one year to reach metamorphosis. One large ? was gravid, with ova nearly ripe. A ? & had swollen thumb pads. The other, smaller female had ova about 1mm in diameter. Either she was post-breeding or immature.