8. Rock Creek, Sec. 19, T. 13 S, R. 19 E, Aug. 11, 1951.
9. Drainage ditch, tributary to Wakarusa River, Sec. 18, T. 13 S, R. 20 E, Aug. 24, 1951.
10. Wakarusa River, Sec. 20, T. 13 S, R. 20 E, Aug. 24, 1951.
11. Rock Creek, Sec. 27, T. 13 S, R. 18 E, Sept. 28, 1951.
12. Wakarusa River, Secs. 16 and 17, T. 13 S, R. 20 E, June 21, 1952.
13. Little Wakarusa River, Sec. 18, T. 13 S, R. 21 E, June 21, 1952.
14. Rock Creek, Sec. 33, T. 13 S, R. 18 E, Oct. 2, 1952.
15. Wakarusa River, Sec. 14, T. 13 S, R. 20 E, March 28, 1953.
Several collections made between 1912 and 1948 are deposited in the University of Michigan Museum of Zoology. In the annotated list these collections, all from Douglas County, are designated "UMMZ":
1. Rock Creek, June 9, 1912.