four other neio S/jecies of Cretaceous Birch. 217 



green Cormorant [Q-raculavus violaceus, Gray), of the Pacific 

 coast, and one somewhat larger than Graculavus velox, de- 

 scribed above. From the metacarpal of the former it differs 

 essentially in having the articular face for the external digit 

 broader and nearly flat, the face for the small inner digit con- 

 siderably smaller and oval in outline, and the intervening 

 tubercle much more prominent. 



millims. 



Greatest diameter of distal end (3-75 



Least diameter of distal end 4*5 



Transverse diameter of outer articular face 5 



Vertical diameter 2'25 



This specimen Avas found by tlie writer in the grey Upper 

 Cretaceous shale, on the north fork of the Smoky-Hill 

 liiver, in Western Kansas. 



PaJceotringa vagans^ sp. nov. 



The existence of a new Wading-bird in the Cretaceous 

 greensand of New Jersey is plainly shown by an interesting 

 fossil recently presented to the Yale Museum. The specimen 

 is the greater portion of the shaft and distal end of a left tibia, 

 somewhat injured, but with its more characteristic portions 

 still preserved. It indicates a bird somewhat smaller than 

 PaJceotringa littoralis, described by the writer from the same 

 locality*, but is probably a closely allied form. From the 

 tibia of that species, the present specimen may readily be di- 

 stinguished by the proportionally more narrow and shallow 

 tendinal canal, on the anterior face of the distal end, and by 

 the more depressed supratendinal bridge. The trochlear sur- 

 face also, on the posterior side, contracts more rapidly, and at 

 its superior margin passes directly, and not abruptly, into the 

 shaft. 



millims. 



Length of portion preserved 62 



Approximate width of condyles in front 8 



Width of bridge at centre 2'15 



Transverse diameter of lower outlet 1"5 



Transverse diameter of shaft where broken 5 



Antero-posterior diameter 4 



This unique specimen was discovered at Hornerstown, New 

 Jersey, about ten feet below the surface of the marl, and was 

 presented to the Yale Museum by John G. Meirs, Esq. 



Yale College, Newliaven, April lOth, 1872. 



* Silliman's Journal, vol. xlix. p. 208, March 1870. 

 Ann. d; Hag. Nat. Hist. Scr.4. Volx. 17 



