B. Richardson 20 934 Catalogue 737 ♀ Microtus skull only 162-56-21-12 738 ♀ Microtus skull only 164-55-21-11 739 ♀ Peromyscus skull only 165-77-19-15 July 28, 1934 740 ♂ Callographosmophilus 250-72-38-19 741 ♂ Citellus 395-178-55-20 742 ♂ Eutamias skull only 221-95-35-15 743 ♂ Eutamias skull only 208-86-34-15 744 ♀ Microtus skull only 152-53-20-11 745 ♂ Microtus skull only 147-50-20-11 746 ♂ Microtus skull only 144-55-22-12 747 ♀ Microtus skull only 145-53-21-11 748 ♀ Microtus skull only 176-62-22-12 749 Bison 750 Bison 751 Bison 752 Bison 753 ♂ Sciurus 322-134-54-18 754 ♂ Red-breasted Nut-hatch 755 ♀ Chicadee July 29, 1934. 756 ♂ Bat 80-36-7-12 757 Sorax 114-51-13-4 758 ♂ Citellus 392-167-55-20 759 ♂ Microtus skull only 188-63-21-12