398 MITCHEL CARROLL 
paired accessory plus an unpaired supernumerary. Numerically, 
in a follicle, as in E, giving a spermatogonial count of twenty-six, 
there should be three classes of second spermatocytes with, respec- 
tively, twelve, thirteen, and fourteen dyads. Furthermore, if, as 
is typical for supernumerary dyads in the Orthoptera (Carothers, 
717; Robertson, 717), it is a matter of chance whether the undi- 
vided odd dyad of the first spermatocyte division accompanies 
the accessory into a daughter cell or not, the number of cells of 
the thirteen class should equal the sum of the cells of the other 
two classes. These conditions are fulfilled by cysts 7 and 8 of 
follicle E, except that, as in cyst 13, of follicle J, there are two 
counts of eleven recorded. | 
In 2511 (table 2, pls. 6 and 7), with the exception of follicles 
A and B, it was not possible to secure counts in more than one 
eyst of a follicle. The six counts obtained in spermatogonial 
cyst 3 of follicle B are identical with the six counts in cyst 4 
of the same follicle. It was difficult to count the chromosomes. 
in the prophases of second spermatocyte cyst 1, follicle A. 
Among the twenty counts recorded for this cyst, three, each con- 
taining thirteen dyads, are not in agreement with the twenty- 
three chromosome complexes of spermatogonial cyst 2 of this 
follicle. But it should be remembered that these are doubtful 
counts. 
Counts are given for several cysts within each of the follicles. 
A, B, H, K, and M of individual 2525 (table 3, pls. 8, 9, 10, 11, 
and 12). The metaphase complex and two of the four anaphase: 
counts (pl. 8, figs. 72 and 73) in first spermatocyte cyst 1 of fol-- 
licle A are in agreement with the spermatogonial count (pl. 10, 
fig. 97) in cyst 2 of the same follicle. The peculiar distribution of 
elements in the other two anaphases (figs. 108 and 109) will be 
discussed beyond (see ‘non-disjunction of the supernumeraries’). 
The first spermatocyte metaphase complexes in cysts 3 and 22 of 
follicle B (figs. 74 and 119), in cysts 14 and 15 of follicle K (figs.. 
82, 83, 84, 86, and 94) and in cysts 17 and 18 of follicle M (figs. 
91 and 118) are clearly constant in each case for the follicle. (As 
will be shown’ beyond, the two exceptions in cyst 14 are apparent 
and not real.) In Follicle H, I was fortunate in obtaining counts. 
