A classification of the larvae and puparia of the Syrphidae of Illinois, exclusive of aquatic forms.

Issued also as thesis (PH.D.) University of Illinois.

Diptera danica. Genera and species of flies hitherto found in Denmark.

1.Stratomyiidae Xylophagidae, Coenomyiidae, Tabanidae, Leptididae, Acroceridae.-2. Asilidae, Bombyliidae, Therevidae, Scenopinidae.-3. Empididae.-4. Dolichopodidae.-5. Lonchopteridae, Syrphidae.-6. Pipunculidae, Phoridae.-7. Platypezidae, tachinidae.

Diptera danica : genera and species of flies hitherto found in Denmark /

"Published at the expenses of the Carlsberg fund."