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Bulletin American Museum of Natural History. [Vol. XXXVII, 



resting-place. This was apparent, as there were many crevices, and when 

 we stirred them from their refuge they would shoot out, but returned at 

 once to the very same fissure as soon as we stopped annoying them. 



It is rather surprising that only two males were found among the thirty 

 specimens of this collection and among the many others caught by natives 

 at the same time. This new species is probably restricted to the open 

 country outside the rain-forests. 



61. Mops midas (Sundevall). 



All the specimens were collected at Faradje during March, when the 

 water of the river was lowest. In fact these bats were only seen during a 

 short period. One of the largest of all the wrinkle-lipped bats, it measures 

 5.3 inches (135 mm.) in length, with the dark wings spreading about 18.5 

 (469 mm.). Its colors are rather indistinct; the white tips of the brown 

 hair on the back give a peculiar silky bloom, which predominates on the 

 much lighter ventral side. Its ears are very broad and are joined across 

 the forehead by a membrane, but there is no trace of a crest. 



During the latter part of the dry season, every evening about dusk, a 

 dozen or so of these fast fliers appeared some 50 or 100 feet above the Dungu 

 River and over the open place of the post. Their favorite sport was to 

 dodge and dive after small hard-shelled Coleoptera, which were then com- 

 mon. We greatly admired their speed, but their success and cleverness in 

 catching insects and the rapidity with which they masticated these tiny 

 beetles in full flight was proved through the microscopical evidence of the 

 stomach contents from specimens shot on the wing. 



There are no rocky cliffs in the neighborhood of Faradje, and it is proba- 

 ble that Mops midas has its abode in the hollows of large trees along the 

 river. This would be in accordance with Glover M. Allen's remarks. Its 

 known range would prove it a species characteristic of the more open country, 

 since it is recorded from Faradje in the northeastern Uele, across the White 

 Nile to Fazogli on the Abyssinian frontier, a distance of about 600 miles. 



62. Mops congicus sp. nov. 



Plate LV. 



One of the largest of its genus, measuring 5.5 inches (140 mm.) in length, 

 with a wing spread of 16.5 inches (420 mm.). Its color is very similar to 

 that of Chcerephon russatus but darker. Together with that species it was 

 found living in a hollow tree near Medje, as described on page 547 ff. Five 

 females out of twelve had each one large embryo (in September). 



