400 BULLETIN: MUSEUM -OF COMPARATIVE ZOOLOGY. 
HIRUNDINIDAE. 
IiRIDOPROCNE BICOLOR (Vieillot). 
TREE SWALLOW. 
An Eskimo brought me a male Tree Swallow that he killed on the 
roof of his igloo ten miles east of Demarcation Point, June 7, 1914. 
TROGLODYTIDAE. 
NANNUS HIEMALIS PALLESCENS (Ridgway). 
COMMANDER ISLAND WREN. 
A specimen taken at Copper Island by Dr. I. S. Kalinin, August 
25, 1912, is in the collection. 
NANNUS HIEMALIS PACIFICUS (Baird). 
WESTERN WINTER WREN. 
A single specimen was seen and taken at Woewodsky Island, south- — 
east Alaska, April 9, 1913. 
NANNUS HIEMALIS SEMIDIENSIS, subsp. nov. 
SEMIDI WINTER WREN. 
Type.— Adult male, no. 66711 M. C. Z. Choyiet Island, Semidi 
Islands, Alaska, collected April 18, 1913, by W. S. Brooks. . 
Characters.— Similar to N. alascensis, but less rufescent, especially _ 
above; bill longer. : 
Measurements.— Type, adult male: wing, 52; tail, 34; tarsus, 18; 
bill, 16. | 
Adult male, North Semidi Island, April 19, 1913, J. Dixon: wing, 
51.5; tail, 32.5; tarsus, 19; bill, 16. 
TURDIDAE. 
PLANESTICUS MIGRATORIUS CAURINUS Grinnell. 
Several were seen about Glacier Bay, Alaska, April 11, 1913, and — 
two on Inian [sland, Cross Sound, Alaska, April 13. ; 
