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59.9.4 (67.5) 



Article XVIII.— THE AMERICAN MUSEUM CONGO EXPEDI- 

 TION COLLECTION OF BATS. 1 



By J. A. Allen, Herbert Lang and James P. Chapin. 



Plates XLIV-LV, 26 Text Figures, and Map. 



CONTENTS. 



I. Systematic List. J. A. Allen 



II. Notes on the Distribution and Ecology of Central African Chiroptera. 



Herbert Lang and James P. Chapin 



III. Field Notes. Herbert Lang and James P. Chapin . 



PART I. SYSTEMATIC LIST. 

 By J. A. Allen. 



The collection of Bats obtained by the American Museum Congo Expedi- 

 tion consists of 794 specimens, representing 68 forms (65 species and 3 

 additional subspecies). About 250 specimens are preserved in alcohol; 

 the remainder are well prepared skins with skulls, full field data, and meas- 

 urements taken from the specimens before skinning. The percentage of 

 missing or defective skulls is small — much less than in any other large 

 collection of mammals it has ever been my privilege to study. This material 

 is thus in the highest degree satisfactory for research. Its determination, 

 however, has been difficult and laborious, due to the impossibility of making 

 direct comparison of the specimens with types or other authentic material 

 in the museums of Europe, owing to the present disturbed international 

 relations. 



The American Museum of Natural History had practically no African 

 material representing this order of mammals previous to the reception of 

 the Lang-Chapin Congo collection, and the other museums of this country 

 have comparatively little. This, however, has been kindly placed at my dis- 

 posal and has proved of great service. I am indebted to Samuel Henshaw, 

 Director, and to Dr. G. M. Allen, curator of mammals, of the Museum of 

 Comparative Zoology at Harvard University, for the loan of 23 specimens 

 from the Blue Nile region and from British East Africa; and to the au- 



Page. 



405 



479 

 497 



1 Scientific Results of the Congo Expedition. Mammalogy, No. 2. 

 405 



