310. 1974. Flies, parasites of skin integument of domestic 



animals. (In Russian.) Parazitologiya (Leningr.) 8(5): 447- 

 448. 



311. and T. Pirnazarov. 1972. Flies of farm stock in the 



Kashkadar' Insoki regions. (In Russian.) Tr. Uzb. Nauchno- 

 Issled. Inst. Vet, 20: 137. 



312. Sabrosky, C. W. 1971. The type-species of Siphona Meigen, 



1803, and Haematobia Lepeletier and Serville, 1828 (Insecta: 

 Diptera) Z.N. (S.) 195. Bull. Zool. Nomencl. 27(5-6) : 234-237. 



313. Sanchez, S. A. 1973. Dung beetles. Cattleman 59(10): 76-77. 



314. Savio, T., L. Hahn, H. D. Johnson, and G. D. Thomas. 1972. 



Effect of horn flies on 3-methoxy-4-hydroxy mandelic acid excre- 

 tion in cattle. J. Dairy Sci. 55(5) : 700. (Abstract only). 



Increased excretion of vanilmandelic acid believed to result 

 from increase in standing time and nervous activity associated 

 with the physical disturbance caused by the biting of the flies. 



315. Savio, T. J., H. D. Johnson, L. Hahn, and G. D. Thomas. 1976. 



Effect of horn flies on vanilmandelic acid execretion of dairy 

 cattle. J. Dairy Sci. 59(2) : 318-320. 



Increased vanilmandelic acid excretion in urine reflected an 

 increase in standing time and nervous activity associated with 

 the physical disturbance caused by the biting activity of the 

 flies. Study was conducted on six lactating Holstein cows exposed 

 to approximately 500 horn flies per cow per day for 4 weeks. 



316. Schlinke, J. C, and J. S. Palmer. 1973. Combined effects of 



phenothiazine and organophosphate insecticides in cattle. J. 

 Am. Vet. Med. Assoc. 163(7. pt. 1): 756-758. 



At recommended dosages, no potentiation of the toxic effect of 

 any of the insecticides by phenothiazine existed. 



317. Schmidt, C. D. 1972. Classification of the physiological develop- 



ment of laboratory-reared female horn flies, Haematobia irritans. 

 Ann. Entomol. Soc. Am. 65(3): 695-701. 



The following characteristics were used to classify physiologi- 

 cal age or development: presence of sperm in spermathecae, 

 presence of follicular relics, pattern of tracheoles on ovarioles, 

 contents of malpighian tubes, appearance of fat bodies, and 

 numbers of nonfunctional ovarioles. 



318. and R. R. Blume. 1973. Laboratory-reared horn flies: 



relationships between width of head and weight of pupa in both 

 sexes and between these measurements and number of ovarioles 

 in females. Ann. Entomol. Soc. Am. 66(6): 1307-1308. 



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