400 bulletin: museum of comparative zoology. 



HiRUNDINIDAE. 



IlRIDOPROCNE 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 Island, Cross Sound, Alaska, April 13. 



