28. Badescu, C. 1971. Contributions to the study of the dissemina- 



tion and control of zoophilous flies on cattle breeding farms, 

 i In Romanian, i Lucr. Stiint. Inst. Agron. 'X Balcescu' Bucur. 

 Ser. C Med. Vet. 14: 271-277. 



Haematobia was abundant at one of the three study farms. 



29. Batte, E. G. 1972. Differential diagnosis of parasitic dermatitis 



of cattle. J. Am. Vet. Med. Assoc. 161 ill 1 : 1265-1268. 



30. Beadles. M. L.. J. A. Miller. W. F. Chamberlain, and others. 



1975. The horn fly: methoprene in drinking water of cattle for 

 control. J. Econ. Entomol. 68(6): 781-785. 



Devices were constructed to meter 0.3-1 mg of methoprene liter 

 of water automatically into the troughs of drinking water of a 

 350-animal herd of cattle. Development of horn flies in manure 

 was completely inhibited. The number of flies was reduced from 

 an average of 360 to 7 per animal. 



31. Bexbrook. E. A. 1946. List of parasites of domestic animals of 



North America. Minneapolis, p. 41. 



32. Bexoit. P. L. G. 1964. Mission de zoologie medical au Maniema 



(Congo. Leopoldville) (P.L.G. Benoit. 1959). 14. Diptera- 

 Stomoxydae. Ann. Mus. R. Afr. Cent., Tervuren (Ser. 8°). Sci. 

 Zool. Xo. 132. pp. 265-268. 



H. minuta and H. t. thirouxi were present in the Congo. 



33. Berry, I. L. 1973. Improved system for measuring flying activ- 



ity of insects by detecting static charges. J. Econ. Entomol. 

 66(3): 820-822. 



H. i irritans was one of the insects used for testing static 



charge system. 



34. R. L. Harbis, J. L. Eschle. and J. A. Miller. 1974. 



Large scale rearing of horn flies on cattle. U.S. Dep. Agric. 

 Agric. Res. Serv.. ARS i Ser) South. Reg. S-35. 6 pp. 



Adult horn flies were maintained on steers and allowed to 

 oviposit directly on the feces from the steers. The egg-bearing 

 feces were combined with an artificial larval-rearing medium 

 which increased the survival and size of the resulting pupae. 

 Procedures developed during the study resulted in an average 

 daily production of 24.800 pupae from about 6.500 flies on each 

 steer. 



35. J. A. Miller, C. D. Schmidt, and J. L. Eschle. 1973. 



Simulation of horn fly populations. Trans. ASAE (Am. Soc. 

 Agric. Eng.) 16(3): 482-485. 



A deterministic model of population growth was developed 

 and used for describing growth of horn flies in the laboratory. 



