

1891,] Geology and Paleontology. 819 
23. Spatula clypeata. 29. Branta hypsibatus.* 
24. Dafila- acuta. 30. Branta propinqua. Sp. nov.* 
25. Aix sponsa. 31. Branta canadensis ¥ 
26. Aythya marila nearctica ? 32. Anser condoni. Sp. nov. 
27. Glaucionetta islandica. 33. Anser albifrons gambelit.* 
28. Clangula hyemalis. 34. Chen hyperborea. 
35- Olor paloregonus.* 
ODONTOGLOSSÆ. 
36. Phænicopterus copei. Sp. nov. 
HERODIONES. 
38. Ardea paloccidentaiis. Sp. nov. 
PALUDICOL. 
39. Fulica americana ¥ 40. Fulica minor. Sp. nov. 
LIMICOL2. 
ig 41. Phalaropus lobatus. 
GALLINA, 
42. Tympanuchus pallidicinctus. 44. Pediocetes lucasii. Sp. nov. 
43. Pediocetes phasianellus colum- j Pediocætes nanus. Sp. nov. 
bianus. 6. Paleotetrix gillii. Gen. et Sp.nov. 
ACCIPITRES. : 
47. Aquila pliogryps. Sp. nov. 48. Aguila sodalis. Sp. nov. 
STRIGES, 
49. Bubo virginianus. 
PASSERES. 
50. Scolecophagus affinis. Sp. nov. 51. Corvus annectens. Sp. nov. 
Of the fifty-one species here enumerated ten have already been 
noticed by Cope, three of which were described as new, and one of which 
has since proved to x new,—/. e., the brant I have described above 
as Branta propingi 
Larus obi is i reprenie by a left coracoid, which is nearly 
perfect. This bone is shorter and stouter than the corresponding 
element in Larus glaucus; otherwise its characters are almost 
identically the same. Zarus robustus was a gull rather smaller than 
- glaucus, with which it may easily have been closely related. 


