HELEOMYZID FLIES NORTH OF MEXICO—GILL 597 
Aupricu, J. M., and Darurnaton, P. S. 
1908. The dipterous family Helomyzidae. Trans. Amer. Ent. Soce., vol. 
34, pp. 67-100. 
Bangs, N. 
1926. Descriptions of a few new American Diptera. Psyche, vol. 33, no. 2, 
p. 43. 
BEcKER, T. 
1897. Beitrag zur Dipteren-Fauna von Nowaja Semlja. Ann. Mus. Zool. 
Acad. Sci. St. Pétersbourg, vel. 2, p. 402. 
1907. Ein Beitrag zur Kenntnis der Dipterenfauna Nordsibiriens. Mém. 
Acad. Sci. St. Pétersbourg, vol. 18, no. 10, pp. 1-3. 
Berzzi, M. 
1911. Biospeologica. XX. Diptéres (premiére série). Arch. Zool. exp. 
gén., vol. 8, ser. 5, pp. 71-79. 
Buarr, K. G. 
1931. A note on the arthropod fauna of rooks’ nests. Ent. Monthly Mag., 
vol. 67, pp. 35-36. 
CockKERELL, T. D. A. 
1914. Miocene fossil insects. Proc. Acad. Nat. Sci. Philadelphia, vol. 66, 
p. 644. 
Cots, F. R., and Lovett, A. L. 
1921. An annotated list of the Diptera (flies) of Oregon. Proc. California 
Acad. Sci., ser. 4, vol. 11, no. 15, pp. 317-318. 
Couiart, A. 
1933. Description d’un hélomyzide troglophile nouveau de Belgique. 
Bull. Ann. Soc. Ent. Belgique, vol. 73, pp. 402-405. 
1940. Etudes biospéologiques. XXII(1). Helomyzidae (Diptera) de 
Transylvanie. Bull. Mus. Hist. Nat. Belgique, vol. 16, no. 35, 
pp. 1-27. 
1948. Notules diptérologiques, I. Bull. Mus. Hist. Nat. Belgique, vol. 24, 
no. 14, pp. 1-8. 
Cotuin, J. E. 
1901. The genus Heteromyza Fallén (Helomyzidae). Ent. Monthly Mag., 
vol. 12, pp. 106-113, 293. 
1923. Diptera (Orthorrhapha Brachycera and Cyclorrhapha) from Spits- 
bergen and Bear Island. Results of the Oxford University expedi- 
tion to Spitsbergen, 1921. Ann. Mag. Nat. Hist., ser. 9, vol. 11, 
peta 
1931. Diptera (Orthorrhapha Brachycera and Cyclorrhapha) from Green- 
land. Ann. Mag. Nat. Hist., ser. 10, vol. 12, no. 37, pp. 90-91. 
1935. Diptera (Cyclorrhapha) from Akpatok Island, Ungava Bay, Canada. 
Results of the Oxford University Hudson Strait expedition, 1931. 
Ann. Mag. Nat. Hist., vol. 15, no. 87, p. 381. 
1939. On various new or little known British Diptera, including several 
species bred from the nests of birds and mammals. Ent. Monthly 
Mag., vol. 75, pp. 134-154. 
1943. The British species of Helomyzidae. Ent. Monthly Mag., vol 79, 
pp. 234-251. 
Cotyer, C. N., and Hammonp, C. O. 
1951. Flies of the British Isles. Pp. 209-213. 
CoquiLLETT, D. W. 
1901. New Diptera in the U.S. National Museum. Proc. U.S. Nat. Mus., 
vol. 23, pp. 614-615. 
