160 PROCEEDINGS OF THE ACADEMY OF [March, 



A REVISION OF THE GENUS MOEMOOPS. 

 BY JAMES A. G. REHN. 



During the preparation of this paper quite an interesting series 

 of forty-nine specimens has been examined, forty-four of them 

 loaned from the collection of the United States National Museum, 

 through the kindness of Mr. Gerrit S. Miller, Jr., of that institution. 

 The author also wishes to acknowledge his indebtedness to Dr. C. 

 Hart Merriam for the loan of two Jamaican specimens from the col- 

 lection of the U. S. Biological Survey; to Prof. D. G.' Elliot for 

 the loan of one specimen from San Domingo from the collection of 

 the Field Columbian Museum, Chicago, and to Dr. F. A. Jentink, 

 of the Leyden jNIuseum, for kindly furnishing information concern- 

 ing two Cuban specimens in the collection under his care. 



The material examined covei's all the localities from which the 

 genus has been recorded with but few exceptions, and in such cases 

 the specimens are not available for examination. 



MOEMOOPS Leach. 



1830. Aello Leach, Trans. Linn. Soc. London, XIII, p. 70. Type, 



Aello cuvieri, a mutilated and almost unrecognizable specimen of 



M. hlainvillii. 

 1820. Mormoops Leach, Trans. Linn. Soc. Loudon, XIII, p. 76. 



Type, M. bUt invUhi Le&ch. 

 1840. Lobostoma Gundlach, Wiegmann's Archiv. fiir Naturgesch.. 



VI, band I, p. 357 (part). 

 185i>. Monnops Peters, Monatsber. K. Preuss. Akad. "Wissensch., 



Berlin, p. 410. 



Generic Characters. — Crown of the head greatly elevated above 

 the face line; ears actually or nearly united basally by the internal 

 margins ; nostrils not margined by extensive cutaneous develop- 

 ments. Facial portion of skull bent strongly upward, the basi- 

 cranial and facial axes being thus almost at right angles. Denti- 

 tion i. l2l, c. \Z\, p. -Il, m. §5|. 



History. — The genus Mormoops was founded by Leach in 1820' 

 on his species M. blainvilUi, which was described from Jamaica. 

 In the same work, having precedence by a few pages (p. 70), is a 



' Trans. Linn. Soc. London, XIII, p. 76. 



