OCTOBER I0, 1902 VoL. III, pp. 91-92 
PROCEEDINGS 
OF THE 
NEW ENGLAND ZOOLOGICAL CLUB 
DESCRIPTION OF A NEW THRUSH FROM CHIRIQUI. 
BY OUTRAM BANGS. 
WHEN I wrote my last paper on the birds Mr. W. W. Brown, Jr., 
collected in Chiriqui,! I referred the thrush of the Alerula tristis 
series to Merula dagne (Berlepsch), calling it Alerula leucauchen 
dagne. I never felt sure of this identification, having been unable 
to examine specimens of the Colombian bird. I therefore sent 
some skins of the Chiriqui form to Mr. C. E. Hellmayr, who very 
kindly compared them with authentic examples of AZ, dagne and 
wrote me as follows : — 
“The true Zurdus dagne Berl. ex S. W. Colombia and N. Ecua- 
dor (Cachavi, S. Savier, and Ventana) differs at once from the 
Chiriqui bird, so named in your paper, in its bistre — or mummy 
brown — (Ridgway, Nomenclature of Colors, Pl. 3, figs. 6 and 10) 
upper surface, and light sepia brown breast and sides. Moreover, 
the bill in my specimens, taken in the same months (March and 
April) as those of Brown, is wholly black, and wing and tail are 
much shorter (ten specimens measured: ala, 103-106; c., 75-85 
mm.). The much darker colors stamp it as at least a very well 
marked subspecies of 7: /eucauchen. The Chiriqui birds (three 
specimens examined), however, are much more like typical ucau- 
1 Proc. New England Zo@l. Club, Vol. III, pp. 15-70, Jan. 30, 1902. 
