J.R. Alcorn 1938 Thomomys bottae canus Feb 24 1938 13 mi W Fallow. 4000 ft. Churchill County, Nevada Pocket gophers were caught on a 100 acre tract on the Swingle Bench. Caught in traps in Alfalfa fields. 10 females and 14 males were caught in this sandy soil. I looked for embryos and if none were found I so stated. I also looked for milk in the teats and if I found any I so stated. Embryos are noted as left or right ovary. Or in other words the gophers right or left side. Total Tail H. Foot Sex Ovaries 8 1/6 2 4/6 1 9/16 ♀ No embryos found. 9 1/16 3 1 4/6 ♂ 9 9/16 2 5/16 1 3/16 ♀ Milk in udder apparently had some young. 8 15/16 2 13/16 1 2/6 ♀ 4 embryos % developed. 2 right side 2 left side. 9 9/16 2 1/6 1 1/6 ♀ No embryos found. 9 2 5/6 1 3/16 ♀ No embryos found. 8 9/16 2 7/16 1 1/6 ♂ 10 2 1/16 1 4/16 ♂ 8 9/16 2 1/16 1 5/16 ♂ 10 1/16 2 1/16 1 1/6 ♂ 8 3/16 2 7/16 1 4/16 ♀ No embryos found. 8 1/6 3 1/16 1 5/16 ♂ 9 9/16 2 1/16 1 4/16 ♀ No embryos found. 8 9/16 2 7/16 1 1/6 ♂ 8 15/16 2 1/16 1 3/16 ♀ 6 embryos % developed 3 each side. 10 5/16 2 1/16 1 4/16 ♂ 9 1/6 2 1/6 1 4/16 ♂