APPENDIX 1. 
ADDITIONS AND CORRECTIONS. 
107-2. Western Willet. Catoptrophorus semipalmatus inornatus (Brewst.). 
(258a) 
(Omitted from the body of the work by mistake; belongs between Nos. 
107 and 108.) 
Synonyms: Pill-willet, Bill-willie—Symphemia semipalmata inornata Brewster, 
1887, A. O. U. Check-list, 1895, and most recent authors. 
Similar in general appearance to the Greater Yellowlegs, but larger, 
lacks the yellow legs, has a much heavier bill, and has a conspicuous white 
patch on the wing at the base of the primaries, most conspicuous in flight, 
but visible when the wing is closed. 
Distribution.—Western North America. Breeds from central Oregon, 
southern Alberta, and southern Manitoba south to northern California, 
central Colorado, southern south Dakota and northern Iowa. 
The Western Willet is a decidedly rare species in Michigan, but there 
are several well attested records of occurrence. At the ‘overflow” near 
Ann Arbor, Prof. Jacob Reighard took several ‘“Willets” (at least five) 
in May, 1889. Unfortunately no entire specimen was preserved, but 
wings and heads were identified as Willets by Norman A. Wood and others. 
That these, or the other Michigan specimens referred to, belonged to the 
western rather than the eastern subspecies is merely an assumption, 
based on the supposed range of the two forms, which would seem to make 
the occurrence of the western form most likely. It is perfectly possible, 
however, that both forms may occur. Dr. Gibbs states that ‘Two speci- 
mens are, or were, in the collection of the Kent Scientific Institute at 
Grand Rapids, which both Gunn and Hughes aver were killed close to 
Grand Rapids. I am perfectly satisfied that this was the fact” (Manu- 
script notes). A careful examination of the above collection, by the 
writer, in 1905, failed to reveal any specimens whatever of Willet. An 
egg in the Agricultural College collection (No. 4972) is recorded as taken 
at Saginaw Bay, by Professor A. J. Cook, but no other data are entered. 
This egg measures 2.23 by 1.54 inches, and is doubtless genuine, but con- 
siderable uncertainty attaches to its origin. 
The bird occurs in small numbers in Wisconsin, Illinois, Indiana, Ohio, 
and Ontario, but appears to be decreasing in numbers, like many other 
waders, and is likely to become extinct in the Great Lake region before 
many years. ; 
It formerly nested throughout most of the southern Great Lake region. 
On its nesting grounds it is described as one of the noisiest of the waders, 
constantly hovering about the intruder and uttering its loud cries of ‘“pill- 
willet, pill-willet,” from which its common name 1s derived. It nests on 
