70 CYRTIDAE OF NORTH AMERICA 



Bibliography 



1. Adams, C. F. 1903. Kans. Univ. Soc. Bull., 11: 32. 



2. Aldrich, J. M. 1905. Cat. of N. American Diptera, pp. 219 to 221. 



3. Bellardi, L. 1859. Saggio di Ditterologia Messicana, i: 77, i Tab. ii. 



4. Bellardi, L. 1862. Saggio di Ditter., etc., appendix 17: 2. 



5. Becher. 1882. Denkschr. Akad. Wien., xlv: 144. 



6. Becker, T. 1887. Berlin, ent. Zeit., xxxi: 107. 



7. BeutenmuUer. 1903. Bull. Mus. Nat. Hist., xx: 89. 



8. Bezzi, M. 1898. Bull. Soc. Ent. Ital., xxx: 35. 



9. Bezzi, M. 1903. Katalog. d. palaarkt. Dipt., ii: 90 to 96. 



10. Bigot, J. 1856. Ann. Soc. Ent. France, ser. 3, iv: 65 and 87. 



11. Bigot, J. 1859. Ann. Soc. Ent. France, ser. 3., vii: 210. 



12. Bigot, J. 1878. Ann. Soc. Ent. France, ser. 5, viii. Bull., Ixxi. 



13. Bigot, J. 1889. Ann. Soc. Ent. France, ser. 6, ix: 313 to 320. 



14. Blanchard in Gay. 1852. [On Panops sp.] Hist. fis. y poUt. de Chile, 



Zool., vii: 375. 



15. Boie, F. 1838. Naturhist. Tidskrift, ii:238. 



16. Bonsdorf, E. J. 1861. Finlands tvivingade Insekter, i: 140. 



17. Brethes, M. 1910. An. Mus. Buenos Aires, xx: 484. 



18. Brauer, F. 1869. Verb. K. K. Zool.-botan. Gesell, Wein., 19:737 to 



740. 



19. Brauer, F. 1883. Denk. Kais. Akad. Wiss. Wien, mathem.-natur. 



Kl., 47:61. 



20. Brunetti, E. 1912. New Oriental Species of Pterodontia and Pialea. 



Rec. Ind. Mus., vii: 475. 



21. Collin, J. E. 1909. Suppositious larva in egg bag of £/peim. Entomol- 



ogist, 42:97. 



22. Costa, A. 1847. Annal. Acad. Nat. Napoli, ser. 2, i, Bollet. Ix. 



23. Costa, A. 1854. Annal. sclent. Napoli, i:78. 



24. Costa, A. 1856. ODescription of genus Opsebius.] Rendic. d. Soc. R. 



Borbon. Acad. Napoli, v: 20. 



25. Coquebert, de Montbret. 1804. On Cyrtus (Syrphus) gibbus, etc. II- 



lustr. Icon. Is., p. 104. 



26. Coquillett in Baker. 1904. Invertebrata Pacifica, i: 23. 



27. Coucke, E. 1895. Ann. Soc. Ent. Belgique, xxxix: 229. 



28. Curtis, J. 1826. Brit. Ent., viii: 110. 



29. Dufour, L. 1833. Astomella, etc., Annal. Scien. Natur., xxx: 210. 



30. Dufour. 1850. Astomella with fig. Ann. Soc. Ent. France, ser. 2, vii. 



31. Duraeril, A. M. C. 1823. Consider, gener. Ins., p. 226. 



32. Dunning, J. W. 1877. Species of Thyllis (Megalybus). Ent. Mo. 



Mag., xiii:261. 



