1962] 
IOI 
Bush - — Genus Anastrepha 
of chromosomes in the Diptera, and its significance. Jour. Exptl. 
Zool. 21:213-279. 
Patterson, J. T., and W. S. Stone. 
1952. Evolution in the Genus Drosophila. The MacMillan Co. 610 pp. 
Phillips, V. T. 
1946. The biology and identification of trypetid larvae (Diptera: 
Trypetidae). Mem. Amer. Ent. Soc. No. 12. 
Rhode, R. H. 
1957. A diet for Mexican fruit flies. Jour. Econ. Ent. 50:215. 
Robertson, J. G. 
1957. Somatic metaphase chromosomes in geographic isolates of the 
carrot rust fly Chamaepsila rosae (F.) (Diptera: Psilidae). Can. 
Jour. Zool. 35:453-458. 
Schrader, F. 
1928. Die Geschlechtschromosomen. Berlin: Borntraeger. 
Schultz, J., R. C. MacDuffee, and T. F. Anderson. 
1949. Smear preparations for the electron microscopy of animal chro- 
mosomes. Science 110:5-7. 
Sharma, A. K., and A. K. Bal. 
1953. Coumarin in chromosome analysis. Stain Technol. 28:255-257. 
Snedecor, G. W. 
1956. Statistical Methods. 5th ed. Iowa State College Press. 534 pp. 
White, M. J. D. 
1954. Animal Cytology and Evolution. 2nd ed. Cambridge Univ. Press. 
454 pp. 
1957. Cytogenetics and systematic entomology. Ann. Rev. Ent. 2:71-90. 
