PLATE 35

Trionyx spinifer hartwegi, dorsal views. Top—Juveniles; left, KU 40210 (× 9/10), 121/2 mi. S, 11/4 mi. W Meade, Meade County, Kansas; right, KU 16531 (× 1), Smoky Hill River, 3 mi. SW Elkader, Logan County, Kansas. Bottom—Adult Males; left, KU 18385 (× 2/5), Arrington, Comanche County, Kansas; right, KU 3758 (× 3/10), Little Salt Marsh, Stafford County, Kansas.

PLATE 36

Trionyx spinifer hartwegi. Top—Juveniles; left, TU 13885, dorsal view (× 3/4), Little Vian Creek, 1 mi. E Vian, Sequoyah County, Oklahoma; right, KU 3732, ventral view (× 5/7), Independence, Montgomery County, Kansas. Bottom—Adult female, TTC 719, dorsal view (× 2/7), 10 mi. S, 2 mi. W Gruver, Hansford County, Texas.

PLATE 37