92 BANGS — NEW THRUSH FROM CHIRIQUI [ Ae 
chen ex Vera Paz (nine specimens), except in averaging a little 
smaller and darker. Specimens from Coiba Island are quite 
identical with them.” 
In Washington Mr. E. W. Nelson and I compared the large 
series of Chiriqui birds with an equally fine one of J. leucauchen, 
and we saw at once that the two were quite separable. Now that 
the relationship of the Chiriqui form to JZ. dagne has been estab- 
lished, it but remains to name the former. 
Merula leucauchen cnephosa! subsp. nov. 
Type, from Boquete, Volcan de Chiriqui, 4000 feet altitude, g adult, no. 
8701, coll. of E. A. and O. Bangs, collected Feb. 25, 1901, by W. W. Brown, 
Jie 
Characters.— Bill mostly yellowish, clouded with dusky at tip and at base ; 
“iris hazel, orbital ring yellow’; similar to true JZ. deucauchen in general, 
except in being smaller and darker — more dusky, less olivaceous, above ; and 
much grayer, less drabby or isabella color, on breast and sides. The color of 
the upper parts in the new form is,— dark grayish olive, darker, more dusky, 
on head, and grayer on rump; interscapulum olive; wings and tail blackish, 
edged with dark grayish olive. In true JZ leucauchen the whole upper parts 
are brighter, more reddish olive, the head but little darker, the rump prac- 
tically the same, or perhaps slightly paler; the wings and tail decidedly paler 
and less blackish than in the new form. 
MEASUREMENTS (in millimeters). 
; Exposed 
No. Sex Wing Tail Tarsus culmen 
8701 (type) a 122.0 96. 29.5 21.0 
8704 (topotype) 122.0 98. 30.0 20.0 
8702 ce & 118.0 92. 30.5 20.0 
8705 a & 119.0 95- 30.0 21.0 
8706 us 3 120.5 95. 30-0 20.5 
8703 Kt Q 119.0 92. 29.5 21.0 
1 Crephosus — dark. 
