;>S Siu'i-nnr Contributions to Avion Pabenfofogy. [jan! 



As will be noted in m\ Philadelphia Academy memoir, to these 

 1 added a Pelican; nine Gulls and Toms, two of the former being 

 now and now extinct; a Phalarope; two Toots, one of which was 

 now and extinct; five Grouse, including a now and extind conns 

 and two now and extinct species; a large number o( Ducks, Creese 

 and Swans; a now and extinct Flamingo; also a Heron; two ex- 

 tinct Eagles; an Owl, and. finally, two now and extinct passerine 

 birds. It is not my intention to rotor to any of these here, beyond 

 what has already been said, the object of the present paper being 

 to set forth the facts that during the summer of 1912 the entire 

 aforesaid collection, with added material from the same localities, 

 likewise a small collection from the I . S. National Museum also 

 front the Silver and Fossil Lakes region again came before me for 

 examination. The entire Cope collection now belongs to the 

 American Museum oi Natural History oi Now York City, and it 

 was through the authorities o( that institution that I was per- 

 mitted to review these valuable fossils, and to prepare them for cata- 

 loguing. Upon undertaking this, by no means easy task. I found 

 that iho collection oi bird skeletons at the I . S. National Museum, 

 oi existing species of American birds in particular, had been very 

 much increased since the Cope collection first came before me. As a 

 result, far more extensive comparisons could be made, ami. nat- 

 urally, now species and a number oi previously unrecognised species 

 came to light. 



The enumeration of these will sufficiently account for publishing 

 this brief advance abstract; while the reader, at the same time, 

 is assured that the now completed memoir, covering the entire sub- 

 ject and presenting complete descriptions of all the now- discoveries, 

 will appear later under other auspices 



This abstract will list only such additional birds as 1 have been 

 enabled to add to our lists of fossil forms through the above noted 

 on. 



Among the /' < 1 find two now species oi Grebes, both 



now extinct, and neither apparently verj abundant during Pleisto- 

 cene time, the first being a Grebe smaller than Holboell'sbut lai 

 than our existing smaller Grebes; while the other was a Dabchick 

 r than the present existing one in our fauna. 



1 t'nnl numerous bono-- of C - s *, in no way 



