372 



Journal of Agricultural Research 



Vol. in. No. s 



leaf. The leaf should then be inserted into a small vial, an absorbent- 

 cotton plug added to force the leaf well toward the bottom, and the vial 

 with contents inverted and partially submerged in a jar of water. It 

 has been found by checks that eggs, when handled in this manner, develop 

 normally unless injured in the transfer. An ordinary moist chamber does 

 not seem to serve the purpose so well. 



Table V. — Duration of the egg stage of the Mediterranean fruit fly 



Num- 

 ber of 



eggs 

 under 

 obser- 

 vation. 



Eggs deposited. 



Eggs hatched. 



Aver- 

 age 

 mean 



tem- 

 pera- 

 ture. 



35° 

 264 



13s 



236 



12 



102 



69s 

 28 



3 



50 



102 



176 



243 



13 



2 



44 

 90 



72 



77 

 60 

 12 

 63 

 24 

 134 

 128 

 20 



74 

 18 



2 



lOI 



10 



Jan. 21-22, 4 p. tn. to loa. m . 



Mar. 9 



Mar. 22-23, 2 p- m. to 9 a. m. . 



Do 



Do 



Do 



Mar. 27, 9 a. m. to I p. m. . . . 



Do 



Do 



Do 



Mar. 27, a. m 



May 19, 3 p. m. to 6 p. m . . . 

 May 12-13, 3 p. m. to 12 m. . 



Do 



June 17-18, 4 p. m. to8a. m. . 



Do 



June 18, 1.30p.m. to 3.30 p. m 

 June 19, 10 a. m. to I p. m . . 

 Jime 19-20, 4 p.m. to 8.30 a. m 

 June 20, 9 a. m. to 4 p. m . . . 

 June 23, 10 a. m. to 4 p. m . . 



Do 



June 24, 1.30 p.m.to 4.30 p.m. 

 July I, 1.30 p. m. to 5p. m. .. 

 July 15. 3-3° P- m. to 4.30 p.m. 



Do 



Do 



Do 



July 15-16, 12 m. to 5 p. m. . 



Do 



Do 



Do 



Nov. 13-14, 4 p. m. to 9 a. m . 



Do 



Jan. 26, 6 a. m. to 3 p. m 



Mar. 12-13, 4o°P- m. to8a. m. . . 



Mar. 26, a. m 



Mar. 27, a. m 



Mar. 28-29, 8 a. m. to 6 a. m. . . . 

 Mar. 29-30, 6 a. m. to 10 a. m ... . 



Mar. 30, a. m 



Mar. 30, a. m., to Mar. 31, a. m. . 

 Mar. 31-Apr. 1,9 a. m.toSa. m. . . 



Apr. 1-2, 9 a. m. to 8 a. m 



Mar. 31, a. m 



May 22, 7 a. m. to 10 a. m 



May 15, a. m 



May 15-16, 2 p. m. to 8 a. m. . . . 



June 20, II a. m 



June 19-20, 6 p. m. to 8 a. m ... . 

 June 2&-21, 6 p. m. to 8 a. m. . . . 

 June 21-22, 6 p. m. to 8 a. m. . . . 

 June 21-22, 6 p. m. to 9 a. m. . . . 

 June 22-23, 6 p. m. to 730 a. m .. . 

 June 25-26, 6 p. m. to 6 a. m . . . 

 Jtme 26, 7 a. m. to 11.45 a. m . . . 

 June 26-27, 4.30 p. m. to 6 a. m . . . 

 July 3-4. 5 P- ™- to 6.30 a. m. . . . 

 July 17, 4.30 p. m. to 6 p. m . . . . 



July 17, 6 p. m. to 8 p. m 



July 17, 9 p. ra. to 10 p. ra 



July 18, 10 a. m to 4 p. m 



July 18 



July 19, a. m 



July 19, 9a.m.toip.m 



July 20, p. m 



Nov. 16, 2 a. m. to 6 a. m 



Nov. 16, 6 a. m. to II a. m 



3>442 



°F. 

 68.7 



70. 2 

 71.0 



71. o 



71-3 

 71. o 



7I' 

 71 

 71 

 71 

 71 

 76, 



75' 



75' 



77' 



77. 



77. 



76.6 



77.0 



77.0 



76.8 



76.8 



77.0 



77.0 



78.9 



78.9 



78.9 



78.3 

 80.0 

 79.8 

 79.8 

 79- S 

 7S-S 

 75- S 



Plate XLV, figure 2, is reproduced from a photograph of an apple that 

 had been hung in a jar with flies for one day. Each dark spot repre- 

 sents a puncture. The entire apple was estimated to contain over 2,000 

 eggs. As the females live over long periods and oviposit freely through- 

 out life eggs may easily be obtained daily for parasitic work while 

 experimenters are en route from one country to another. Apples are 



