372 



MISSES K. FOOT AND E. C. STROBELL : RESULTS OF 



Photo 6. One of the two male E. variolarius from the same deposition of eggs from ■\\'hich 



we raised the three females for crossing with E. servus : see page 342. 

 Photo 7. Two male specimens of the Fi hybrid generation. These bugs were killed 



August 11th, 1912, and their testes dissected out and mounted for cytological 



study. 

 Photo 8. Two male specimens of the Fi hybrid generation. Killed August 28th, 1912. 

 Photo 9. The male of the first pair of Fi hybrids. The Fo males from this pair of 



hybrids are shown on Plate 29, photos 17-25. See Record IV. and page 346. 

 Photo 10. The male of the third pair of Fi hybrids. The F^ males from this pair of 



hybrids are shown on Plate 31, photos 33-41. See Record VI. and page 347. 

 Photo 11. The male of the fifth pair of Fi hybrids. The F^, males from this pair of 



hybrids are shown on Plate 28, photos 15 and 16. See Record VIII. and 



page 347. 

 Photo 12. The male of the fourth pair of Fi hybrids. The F- males from this pair of 



hybrids are shown on Plate 32, photos 42-48. See Record Vll. and page 347. 

 Photo 13. The male of the sixth and seA-enth pairs of Fi hybrids. The Fo males from 



the sixth pair are shown on Plate 32, photos 49 ifc 50, and the Fo males 



from the seventh pair are shown on Plate 33, photos 51-57. See Records 



IX. and X. and page 349. 

 Photo 14. The male of the second pair of Fi Jiybrids. The ¥■> males from this pair 



are shown on Plate 30, photos 26-32. See Record V. and iiage 346. 

 Photos 15-16. Four Fo males from the fifth pair of F, hybrids. Sec jilioto 1 1 for the 



male of this pair of hybrids, Record VIII. and page 347. 



Plate 29. 



Photos 17-25. Forty-three Fj males from tlie fir.^t pair of F, hybrids. See photo 0, 

 Plate 28, for the male of this pair of hybrids, Recoid IV. and page 340. 



Plate 30. 



Photos 26-32. Thirty Fo males from the second pair of Fi hybrids. aS*'^ photo 14, 

 Plate 28, for the male of this pair of Fi hybrids, Record V. and page 346. 



Plate 31. 



Photos 33-41. Forty-eiglit Fo males from the third pair of F, hybrids. See photo 10, 

 Plate 28, for the male of this pair of hybrids. Record VI. and page 347. 



Plate 32. 



Photos 42-48. Twenty-seven Fo males from the fourth pair of Fi hyljrids. See 

 photo 12, Plate 28, for the male of this pair of hybrids, Record VII. and page 

 347. 



Photos 49-50. Six F-, males from the sixth pair of F, hybrids. See photo 13, Plate 28, 

 for the male of this pair of hj'brids, Record IX. and page 349. 



Plate 33. 



Photos 51-57. Thirty-two Fo males from the seventh pair of Fi hybrids. See photo 13, 

 Plate 28, for the male of this pair of hybrids, Record X. and pao-e 349. 



