PL. XXI. 



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* v 



i * 



ft 



- 





>* 



448 



452 



455 



450 



451 



449 



' # 



\ 



454 



BRUUBV 1 CLAWKE. LTD tITHOS MULfANO LONDON 



FIGS. 448449 KITTIWAKE GUI.I,. FIG. 451 RICHARDSON'S SKUA. 



450 GREAT SKUA. 452454 RAZORBIU. 



FIGS. 455456 BI.ACK GUILLEMOT. 



