EGGS OF NORTH AMERICAN BIRDS. 65 



367. Short-eared Owl, Asio accipitrinns. Eggs, 4 to 7, 

 rather elliptical ; 1.22 -|- 1..50 to 1.30 -f 1.60. Breeds through- 

 out temperate and Arctic North America, but more abun- 

 dantly in the northern portions, in April and May ; also in the 

 Old World. Nests placed on the ground or in low bushes. 



368. Barred Owl, Syrnium nebulosiim. Eggs, 2 or 3, 

 rather spherical ; 1.55 -f 1.85 to 1.70 -{- 2.00. Breeds in the 

 wilder portions of Eastern United States, excepting Florida, in 

 March and April. Nests placed in holes of trees or in ti-ees ; 

 the deserted nest of some large bird being frequently used. 



368ff. Florida Barred Owl, Syrtiium nehuloswn allani. 

 Eggs, 3 or 4, indistinguishable from those of No. 368, but are 

 a little smaller; the nesting habits are similar. Breeds in 

 Florida, and possibly in Texas, in February and March. 



369. Spotted Owl, Syrnium occidentale. Eggs, accord- 

 ing to Ridgway, measure 1.80 -\- 2.05. The bird has been 

 taken in New Mexico, Arizona, California, Lower California, 

 and Mexico. 



370. Great Gray Owl, Scotiaptex ciiierea. Eggs, 3 or 4, 

 rather oval ; 1.78 -f- 2.25 to 1.80 + 2.30. Breeds in Arctic 

 America, in May. Nests placed in trees. 



370«. Lapp Owl, Scotiaptex cinerea lappoyiica. Eggs, in- 

 distinguishable from those of No. 370. Extralimital. Breeds 

 in the arctic portions of tlie Old World ; bird accidental in 

 Alaska. 



371. Richardson's Owl, Nyctala tengmalmi richardsoni. 

 Eggs, 4 to 5, rather spherical; 1.05 -|- 1.25 to 1.08 -f 1.28. 

 Breeds in Arctic America, south at least to the Magdalen Isl- 

 ands, Gulf of St. Lawrence, in May. Nests placed in holes of 

 trees. 



372. Saw-whet Owl, Nyctala acadica. Eggs, 3 to 5, 

 rather spherical ; .95 -|- -88 to .90 -|- 1.00. Breeds throughout 

 North America, from the Middle States northward, in May. 

 Nests placed in holes of trees. 



373. Screech-Owl, Megascops asio. (Type, Plate VIL) 



