Article IV. MAMMALS FROM SOUTHERN MEXICO 

 AND CENTRAL AND SOUTH AMERICA. 



By J. A. ALLEN. 



During the last three years the Museum has obtained by 

 purchase several small collections of mammals from Mexico 

 and Central America, the more important of which are the 

 three which form the subject of the present paper. In work- 

 ing up these collections much other material previously in 

 the Museum, including considerable from Colombia and Ven- 

 ezuela, has been critically examined, with the result that a 

 number of apparently new forms have been discovered, and are 

 here included. 



In this connection I wish especially to acknowledge my in- 

 debtedness to Mr. Outram Bangs, Curator of Mammals at the 

 Museum of Comparative Zoology, Cambridge, Mass., for the 

 generous loan of types, topotypes, and other material from 

 Chiriqui and elsewhere; to Mr. Gerrit S. Miller, Jr., in charge 

 of the collection of mammals at the U. S. National Museum, 

 for the use of specimens from Mexico and Costa Rica; and 

 to Dr. C. Hart Merriam, Chief of the Biological Survey, U. S. 

 Department of Agriculture, for the loan of specimens, and 

 for aid in determining some of the smaller rodents in the Vera 

 Cruz collection. 



I. SOUTHERN VERA CRUZ, MEXICO. 



A collection of about 150 specimens of mammals was made 

 for the Museum by Mr. E. A. Colburn, in the State of Vera 

 Cruz, during March and April, 1901. The collection, however, 

 contained no bats. The locality given for the specimens is 

 "Pasa Nueva," situated a short distance from Tlacotalpan, 

 about 60 miles south of the city of Vera Cruz, in the low 

 tropical coast belt. 



i. Marmosa murina mexicana Merriam. Two specimens, 

 male and female, March n. 



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