FAMILY KIIYNCHOriD.E. SKIMMKKS. 



45 



FAfllLY RHYNCHOPID/E. 



Skimmers. 



Bill, like blade of a knife, the under mandible the longer ; plumage, 

 black above, white below. 



* Group I. Wing, 13 to 15 inches long. 



Bill, thiu, kuife-like ; lower inaLulihle, the Ioniser; t);isal half ut hill, veiQiilioii nnl, hlack- 

 ishattip; upper plninaj^e, hlack ; uuderparts, white. B/ujuchops ni<jra. Black Skimmer. 



See No. 54. 



* For directions for measurement, see page 9. 



