1909.] THE CAYUGA LAKE BASIN, N. Y. 437 



270 (542a). Passerculus sandwichensis savanna (Wilson-). Sav- 

 annah sparrow. 



Common summer resident. The average date of spring arrival 

 is April 6, the earliest, March 23, 1905. About July 25 this species 

 begins to collect in flocks which become numerous the first of Octo- 

 ber. All have left usually by the middle of the month. 



271 (546). Ammodramus savannarum australis Maynard. Grass- 

 hopper sparrow. 



Common summer resident. The average date of spring arrival is 

 May 2, the earliest, April 26, 1905. 



272 (548). Passerherbulus lecontei (Audubon). Leconte's sparrow. 

 One specimen was shot in the Renwick marshes by L. A. Fuertes, 



October 11, 1897. 



-73 (549-i)- Passerherbulus nelsoni (Allen). Nelson's sparrow. 



The numerous specimens taken since 1900 justify the conclu- 

 sion that this species is a common visitant during the fall migration 

 from the middle of September to the first of October. They have 

 always been found in the rushes close to the water where they 

 skulk and run in a fashion very suggestive of a mouse. When 

 flushed they rise for a moment and disappear again much as a wren. 



274 (549.1a). Passerherbulus nelsoni subvirgatus (D wight). Aca- 

 dian sharp-tailed sparrow. 



Uncommon but regular fall visitant. It arrives the very last of 

 September or first of October, about a week later than the Nelson's 

 sparrow and remains for a period of from 12 to 15 days. Neither 

 this nor the preceding species has ever been taken in the spring. 

 The definite records are skins, which are now in the collection of L. 

 A. Fuertes and that of Cornell University, taken between September 

 26 and October 12. 



275 (554)- Zonotrichia leucophrys (Forster). White-crowned 

 sparrow. 



Common transient. The average date of spring arrival is May 

 4, the earliest, May 2, 1907. It remains until May 20 becoming com- 

 mon from the tenth to the fifteenth of the month. It is common in 

 the fall during the very last of September and the first half of Octo- 



