islet-cala^ 
Fig. 4. 
A. Upper surface of the wing of a Little Stint ( Tringa rninutd), to show 
(a) the difference between the “ distal ” and proximal overlap (the former 
is shown by the major, and the latter by median coverts), and (6) the faulting 
which result in the formation of the “ intercalary row.” 
B. Upper surface of a portion of the wing of an Owl, to show the diasta- 
taxic condition of the wing — the absence of a quill between the fifth pair 
of major coverts. 
