J.R. Alcorn 1938 Citellus leucurus leucurus 5 mi. N+W Nixon, 4000 ft., Washoe Co., Nevada Mar.25 Today I was on a tufa point ½ mi. E of the Truckee River on the Pyramid Lake Indian reservation and while resting part way up the hill I noted 15 or 20 Antelope Squirrels running around in the tufa & rocks below me. They were close to one another and some were chasing each other. Two ran 20 ft from me and I killed both of them in one shot with the 41/0 gauge pistol. I shot 2 others from the same bunch and to my surprise all 4 were males as follows. Total Tail H.-Foot 8 2 1 5/6 ♂ 8 3/16 2 3/16 1 9/16 ♂ 8 3/16 2 3/16 1 9/16 ♂ 8 3/16 2 4/16 1 5/6 ♂ { all had numerous flesh on them. } 8 mi. W Fallon, 4000 ft., Churchill Co., Nevada. Mar.30 5 Antelope squirrels picked up after poison- ing operations were as follows. Total Tail H.-Foot Crown Set 6 1/2 1 1 9/16 3/16 ♀ Embryos 8 1/16 inches 5 R. 2 L 7 13/16 1 9/16 1 7/16 3/16 ♀ 7 em. 5 1/16 " 3 R. 4 L. 8 2 3/16 1 8/16 4/16 ♀ 5 em. 9/16 " 3 R. 2 L. 8 2 1 8/16 4/16 ♂ - 8 3/16 2 3/16 1 9/16 3/16 ♀ Enlarged uterine horns.