l6o IOUISE B. WALLACE. 



EXPLANATION OF PLATE IV. 



FIG. 55. Spermatozoa escaped from cell bodies. 



FIG. 56. Spermatozoa contracted and coiling up. Cell bodies contracting also. 



FIG. 57. Primary oocyte, growth period. 



FIG. 58. Cell bodies. Stages in degeneration, a-e. 



FIG. 59. Portion of sperm-duct in breeding season. 



FIG. 60. Cyst full of degenerating spermatids. ( Pholcus phalangioides. ) 



FIG. 61. () Mature spermatozoa, (b) degenerating cell bodies and (f) degen- 

 erating spermatids found in lumen of testis of Pholcus phalangioides. 



