NATURAL SCIENCES OP PHILADELPHIA. 175 



Length 2-G inches; tail 1-8; naked part -1. Extent 11 inches. Head -85 ; 

 cars 1-3 ; orillon -5. 



Inhabits Peru. Resembles very much the North American lon<^-eared bat, 

 is easily distiiiojuished, however, by the absence of the tubercles on the face. 

 It would be called by some Plecotus, but I do not admit of any such genus. 



I have to ask indulgence for introducing into the above descriptions some 

 characters which are not specific, but strictly generic. But the arrangement of 

 the Vespertilionidae is by no means such as can be admitted by any considerate 

 naturalist, it therefore became necessary to include these generic characteris- 

 tics in the two first species, as no deterrainate generic description of the genus 

 Phyllostoma has yet been given. 



xiiifjiist 11 fJi. 



Vice-President Bkidqes iu the Cbair. 



A paper wa.s presented for publication in the Proceedings, entitled 

 ''Descriptions of some new Reptiles, collected by the U. S. Exploring 

 Expedition, under command of Capt. Charles Wilkes, U. S. N., 3d 

 Part, by Charles Girard ;" which was referred to a committee. 



August 18^7i. 



Dr. Leidy in the Chair. 



A paper was presented, entitled " Rectification of the references of 

 certain of the extinct mammalian genera of Nebraska, by J. Leidy, 

 M. D. ;" which was referred as usual. 



August 25(h. 

 Vice-President Bridges in the Chair. 



Dr. Leidy announced the decease of Prince Charles Lucien Bona- 

 parte, and of Mr. H. J. Pratten, of New Harmony, Correspondents of 

 the Academy. 



The Committee on Dr. Leidy's paper presented at the last meeting, 

 reported in favor of its publication. 



BectifLcation of the references of certain of the extinct Mammalian genera 



of Nebraska. 



BY JOSEPH LEIDY, M. D. 



ELOTHERIUM, Pomel, 184T. 

 Untelodon, Aymard, 1848 ; Archceothcrhim, Leidy, 1850. 



1. Elotherium Moutoni. 



ArchcEotherium Mortoni ; Elotherium Mortoni, Leidy: Proc. A. N. S. ix, 89. 



2. Elotherium ingens. 



Entelodon ingens, Leidy : lb. viil. 164; ix. 89, 



1857.] 



