m 



FAMILY RHYNCHOPID^. SKIMMERS. 



46 



FAHILY RHYNCHOPIDyC. 



Skimmers. 



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

 black above, white below. 



* Group 1. Wing, 13 to 15 inches long. 



Bill thin liuile-like; lowiT mandible, tlie longer ; l.asul lialf uf hill, vrrmiliou jcl, l.laek- 

 ish at tip : uppe'- pl-'majje, Ijluck ; uudo.parts, white. Hhvuchops r,i,jm. Black Skimmer. 



See Xij. 51. 



* For directions for measurement, see page 9. 



