8 



42. LARUS GI-,AUt!US Brunn. 



GlaufouM Gull. [B 656, C 543, R 660, C 768.] 



4-2.1 LAKUS BAKROVIAMTS Ridgw. 



Point Barvow Gull. [B — , C — , R — , C— .] 



43. LARUS LEUCGPTERrS Faber. 



Iceland Gull. [B 658, C 544, R 661, C 769.] 



44. LARUS GLAUCESCENS N.4um. 



Glaiic<»us-\ving-ed Gull. [B 657, 659, C 545, R 662, C 770.] 



45. LARUS KUMLIENl Brkw.st. 



/ Knuilien's Gull. [B — , C — , R — , C — .] 



46. LARUS NELSGNl Hensh. 



Nelson's Gull. [B — , C — , R — , C — .] 



47. LARUS MARINUS Linn. 



Great Blac-k-baoked Gull. [B 660, C 546, R 663, C 771.] 



48. LARUS SCHISTISAGUS Stkjn. | 



Slaty-backed Gull. [B — , C — R — C — .] 



49. LARUS OCCIDENTALIS Aud. 



Western Gull. [B 662, C 547,5, R 664, C 774.] 



£50.1 LARUS AFFIXIS Reinh. 



Siberian Gull. (B — , C — , R 665, C 776.] 



51. LARUS ARGENTATUS Brunn, 



Herrinj-- Gull. [B — , C 547, R 655, C 772.] 



51a. LARUS ARGENTATUS SMITHSONIAKUS CouE.s. 



American Herring' Gull. [B 661, C 547a, R 666«, C 773.] 



52. LARUS VEGJB' (Pai,men). 



A'ega Gull. [B — , C — , R 667, C 775,] 



53. LARUS (JALIFORNICUS Lawr. 



California Gull. [B 563, C 548a, R 668, C 777-] 



54. LARUS DELAWARENSTS Ord. 



Ringr-billed Gull. [B 664, C 548, R 669, C 778.] 



55 LARUS BRACHYRHYNOHUS Rich. 



Short-billed Gull. [B 665, 673, C 549, R 670, C 780.J 



