Synopsis of the North American Syrphidae

Synopsis of the North American Syrphidae

Water Reptiles of the Past and Present: Exploring the Aquatic World: Evolution, Anatomy, and Behavior of Water Reptiles

Paleontology

On the Classification of North American Diptera: Papers 1-3

Synopsis of the North American Syrphidae

North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus

Synopsis of the Families and Genera of North American Diptera: Exclusive of the Genera of the Nematocera and Muscidae, with Bibliography and New Species, 1878-88

Synopsis of the Families and Genera of North American Diptera: Exclusive of the Genera of the Nematocera and Muscidae

Fam. Syrphidae

North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus: Exploring the Ancient Marine Reptiles of North America

Synopsis of the Families and Genera of North American Diptera: Exclusive of the Genera of the Nematocera and Muscidæ, with Bibliography and New Species, 1878-88

Synopsis of the North American Syrphidae

New or little known extinct vertebrates

... Synopsis of the North American Syrphidae

The Butterflies of the Eastern United States and Canada: With Special Reference to New England, Volume 1

The Butterflies of the Eastern United States and Canada: With Special Reference to New England, Volume 1