116 GENEBA AND SPECIES OF BIEDS. 



4. glacialis, Linn. (p. 496.) Arctic N. America & 



N.E. Asia. 

 N.W. Europe, Iceland. 

 California, Mediterranean 



countries {winter). 



5. adamsi, Gray. (p. 500.) Arctic N. America & 



N. Asia to Novaya 

 Zemlya. Lapland. 

 Japan, N.W Europe 

 {winter). 



II. Colgmbofoeg, Milne-Edw. 



(Lydekker, Cat. Foss. B. p. 192, 1891.) 



1. mtmitus, Milne-Edw. (L., p. 192.) France (Lower Miocene). 



2. anglicus, Lydekker. (L., p. 192.) England (Upper 



Pliocene). 



Order X. HESPEROKNITHIFORMES. 



(Odontolcce, Lydekker, Cat. Foss. B. p. 202, 1891.) 



Family I. HESPERORNITHID^]. 



(Lydekker, t. c. p. 204.) 



I. SltSpmmtfe, Marsh. 



(Lydekker, t. c. p. 205.) 



1. regallS, Marsh. (L., p. 205.) N. America : 



W. Kansas (Cretaceous). 



2. crassipen. Marsh. (L., p. 209.) N.America: 



W. Kansas (Cretaceous). 



3. gracilis, Marsh, Amer. Joum. Sci. xi. p. 510 N. America : 



(1876). W. Kansas (Cretaceous). 



II. (lomornte, Marsh. 



(Marsh, Amer. Joum. Sci. (3) xlv. p. 81, 1893.) 



1. altUS, Marsh, I. v. Montana (Cretaceous). 



