indicated in the University of California Museum of Vertebrate Zoölogy, as follows: 3 mi. NW Pátzcuaro, 6700 ft., 1; 2 mi. W Pátzcuaro, 7700 ft., 5; 2 mi. W Pátzcuaro, 6700 ft., 2; Pátzcuaro, 1 (U. S. Nat. Mus.); 5 mi. S Pátzcuaro, 7800 ft., 7.

For the loan of comparative materials we are grateful to Dr. Harold E. Anthony of the American Museum of Natural History, Mr. Stanley P. Young and Dr. Hartley H. T. Jackson of the Biological Surveys Collection in the United States National Museum, Dr. Charles P. Lyman of the Museum of Comparative Zoölogy, and for assistance with the field work to the John Simon Guggenheim Memorial Foundation and to Miss Annie M. Alexander.

    Transmitted April 1, 1948.

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