29. CEPPHUS COLUMBA Pall. 



Pig-eon Guillemot. [B 727, C 632, R 761, C 872.] 



30. URIA TROILE (Linn.). 



Mni-i-e. [B 729, 730, C 634, R 763, C 874.] 



30«. URIA TROILE CALIFORNICA (Bryant). 



California ainrre. [B — , C — , R 763a, C 875.] 



31. URIA UOMVIA (Linn.). 



Briinnioh's Mnrre. [B 731, C 635, R 764a, C S76.] 



31a. URIA LOMVIA ARRA (Paii. ). 



Pallas's Murre. [B — , C — , R 764, C — .] 



32. AUCA TORDA Linn. 



Razor-billed Auk. [B 711, C 616, R 742, C 877.] 



33. PLAUTUS IMPENXIS (Linx.). 



Great Auk. [B 710, C 615, R 741, C 878.] 



34. ALLE AUUE (Linn. 1. 



Dovekie. [B 738, C 626, R 752, C 863.] 



35. MEGAUESTRIS SKUA (Brunn.). 



Skua. [B 652, C 539, R 696, C 764.] 



36. STERCORARIUS POMARINUS (Tkmm.). 



Poiuarine Jaeg-er. [B 653, C 540, R 697, C 765.] 



37. STERCORARIUS PARASITICUS (Linn ). 



Parasitic Jaeger. [B 654, C 541, R 69S, C 766.] 



38. STERCORARIUS LONGICAUDUS ViBii-i,. 



Irong-tailed Jaeger. [B 655, C 542, R 699, C 767. J 



39. GAVIA ALBA (Gunn.). 



Ivory Gull. [B 676, 677, C 550, R 657, C 785. j 



40. RISSA TRIDACTYLA (Linn.). 



Kittiwake. [B 672, C 552, R 658, C 782.] 



40a. RISSA TRIDACTYLA POLLICARIS Ridgw 



Prtciflc Kittiwake. [B — , C 5523, R 658«, C 783.] 



41. RISSA BREVIROSTRIS (Bruch). 



Red-legged Kittiwake. [B 674, 675, C 553, R 659, C 784.I 



