Mydaidae and Syrphidae

15 p. ; 24 cm.Includes bibliographical references

Diptera, Porto Rico and Virgin Islands

23 p. : ill. ; 23 cm.Includes bibliographical references

New species of Diasemopsis

17 p. ; 24 cm.Includes bibliographical references (p. 16)

African Syrphidae.

10 p. ; 25 cm.Includes bibliographical references

West Indian Mydas and Proctacanthus

9 p. ; 24 cm.Includes bibliographical references

Synopsis of North American Spilomyia

11 p. ; 24 cm.Includes bibliographical references

American Erotylidae

14 p. : ill. ; 24 cm.Includes bibliographical references

African Dolichopidae and Drosophilidae

4 p. ; 25 cm.Includes 1 bibliographical reference (p. 4)

New Nycteribiidae and Streblidae

15 p. : ill. ; 24 cm.Includes bibliographical references

Diptera from Tuxedo

p. 21-115 : ill. ; 24 cm.Includes bibliographical references