522 LARID.E. 



and crown mottled with dusky brown, and greyish-white, 

 more uniform in colour on the nape, and darker ; back, 

 wing-coverts, and tertials ash-grey, margined with dusky 

 black ; primaries slate-grey, margins of the inner webs 

 white ; secondaries ash-grey ; tail-feathers spotted with 

 dusky grey towards the ends ; chin, sides of neck, breast, 

 and all the under surface white ; legs pale brown. 





