[Plate VI]. Eighteenth dorsal vertebra of Clidastes Westii Williston, natural size. Fig. 1, centrum from behind; fig. 2, from below.

[Plate VII]. Fig. 1, Microdon megalogaster Snow; fig. 2, Brachyopa cynops Snow; fig. 3, Syrphus ruficauda Snow; fig. 4, Callicera montensis Snow; fig. 5, Tropidomyia bimaculata Williston; fig. 6, Rhingiopsis rostrata Roeder; fig. 7, Ancanthina hieroglyphica Wiedemann.

[Plate VIII]. Melitera dentata. Adult, silken cocoon and outer layer of dirt-masses held together by silken threads; larva (shaded); larva in outline showing position and number of tubercled hairs; hind wing of adult showing venation.


PLATE I.   Skull of Pteranodon sp., one-fifth natural size.

Kan. Univ. Quart. Vol. I.

S. W. Williston.