Wennicu.— Spermatogenesis of Phrynotettix magnus. 
PLATE 6. 
Fig. 62.— Stages in the transformation of chromosome-pair “A,” from 
pachytene spireme to metaphase of the first spermatocyte. 
Fig. 63.— Similar stages for the chromosome-pair “‘B,” for the equal-type. 
Fig. 64.— Same stages for the pair “B,” unequal type. 
Fig. 65.— Similar transformation stages for chromosome-pair “C.”’ 
Fig. 66.— Telophase of an early spermatogonium, showing members of chro- 
mosome-pair “A.” 
Fig. 67.— Telophase of one of the last spermatogonia, showing members of 
chromosome-pair “A.” 
Figs. 68, 69.— Preleptotene stages, showing persistence of chromosome-pair 
er Aee 
Fig. 70.— Early leptotene. Conjugation of pair “A.” 
Fig. 71.— Later leptotene. Conjugation of pair “A.” Spireme of the ac- 
cessory. 
Fig. 72.— Spireme of the accessory. 
Fig. 73.— Zygotene stage, showing conjugation of pair “A.” 
Fig. 74.— Zygotene stage, showing conjugation of pair “A’’ completed. 
