North American Recent Soft-Shelled Turtles (Family Trionychidae)

by Robert G. Webb

PLATE 51

Fig. 1. Eggs of T. m. calvatus in situ, June 1, 1954, approximately six inches below surface, from nest shown in [Fig. 2, Pl. 50]. Note sandy substrate and seemingly irregular arrangement of eggs.

Fig. 2. Eggs of T. m. calvatus in situ, June 1, 1954; nest located at brim of incline shown in foreground of [Fig. 1, Pl. 50]. Note gravelly substrate (in foreground) and symmetrical arrangement of eggs.

PLATE 52

Lectotype of Trionyx spinifer Lesueur, Museum d'Histoire Naturelle, Paris, No. 8808 (× ¹/₅); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana. Top—Dorsal view. Bottom—Ventral view.