1904.1 NATURAL SCIENCES OF PHILADELPHIA. 427 



A REVISION OF THE MAMMALIAN GENUS MACROTUS. 

 BY JAMES A. G. REHN. 



Dui'ing the preparation of this paper a series of one hundred and 

 eighty-five specimens have been examined, seventy-six preserved as 

 skins, the remainder being in alcohol. This interesting collection, 

 representing the material of this genus preserved in the leading Ameri- 

 can institutions, was from the following collections: ninety-two from 

 the Biological Survey of the U. S. Department of Agriculture, fifty 

 from the U. S. National Museum, thirty-one from the American Mu- 

 sevmi of Natural History, five from the Field Columbian Museum, 

 and the remainder from the collection of the Academy. The author 

 wishes to thank Drs. C. Hart Merriam, J. A. Allen and D. G. Elliot, 

 and Mr. G. S. Miller, Jr., of the above institutions, for their kindness 

 in permitting the use of specimens, and also for replies to inquiries 

 regarding the same. 



MACROTUS Gray.' 



1843. Macrotus Gray, Proc. Zool. Soc. London, 1S43, p. 21. Type, Macrotus 



waterhousii Gray. 

 1855. Macrotus Wagner, Suppl. Schreber's Saugthiere, V, p. 639. 



1858. Macrotus Baird, Proc. Acad. Nat. Sci. Phila., 1858, p. 116. 



1859. Macrotus Baird, Rep. U. S. and Mexican Boundary Survey, Vol. II, 

 Pt. ii, Mamm., p. 3. 



1860. Macrotus Saussure, Revue et Magasin de Zoologie, 2" serie, XII, p. 486. 

 1864. Macrotus H. Allen, Monograph Bats N. Amer., p. 1. 



1864. Macrotus Gundlach, Monatsb. K. Preuss. Akad. Wissensch., Berlin, 

 1864, p. 382. 



1865. Macrotus Peters, Monatsb. K. Preuss. Akad. Wissensch., Berlin, 1865, 

 p. 503. 



1875. Macrotus Coues and Yarrow, Rep. Expl. Surv. W. 100th Merid., V, 

 p. 80. 



1878. Macrotus Dobson, Catal. Chiropt. Brit. Mus., p. 463. 



1879. Macrotus Alston, Biol. Cent.-Amer., Mamm., p. 36. 



1890. Macrotus H. Allen. Proc. Amer. Philos. Soc, XXVIII, p. 73. 



1891. Otopterus Lydekker, in Flower and Lydekker, Mammals Living and 

 Extinct, p. 673. 



1894. Macrotus Allen, Monograph Bats N. Amer., 1893, p. 33. 



1898. Otopterus Merriam. Proc. Biol. Soc. Wash., XII, p. 18. 



1899. Otopterus Nelson, North American Fauna, No. 14, p. 18. 



1901. Otopterus EUiot, Field Columb. Mus. Publ., Zool. ser.. Vol. II, p. 419. 

 1904. Macrotus Miller, Proc. U. S. Nat. Mus., XXVII, p. 344. 



' As the author does not consider that Macrotis Dejean invalidates this name, 

 he has retained the term applied by Gray. The name Macrotus Leach {Syst. 

 Cat. Spec. Indig. Mamm. Birds Brit. Mtis., 1816, p. 5) is a nomen nudum, and 

 therefore has no standing. For discussion of the M acrotus-Otopterus question 

 see True and Allen (Allen, Monogr. Bats N. Amer., 1893, p. 33). 



