386 MITCHEL CARROLL 
Second spermatocytes 
Follicle K | 4 metaphases: 12 dyads. 
Cyst 12 |} 3 metaphases: 13 dyads. 
Follicle L | 4 metaphases: 11 dyads. 
Cyst 13 } 2 metaphases: 12 dyads:. 
3 metaphases: 11 dyads. 
; 3 metaphases: 12-dyads. 
) 3 metaphases: 13 dyads. 
Follicle M 
Cyst 14 
Spermatogonia 
Follicle N a 
Cyst 15 f{ 2 metaphases: 25 dyads, 
Follicle O 
Cyst 16 1 metaphase: 23 dyads. 
Follicle P 
; : 23 dy 
Cyst 17 1 metaphase: 23 dyads. 
(These were the only spermatogonial mitoses which gave clear 
counts. ) 
Thus, in this individual, there is a difference in the chromosome 
counts of the first spermatocyte metaphase of one dyad. In 
twenty-six cells contained in four different cysts (nos. 3, 7, 9, and 
10) and four follicles (B, G, I, and D) there are present twelve 
tetrads and one dyad, the accessory (figs. 1, 2, 3, 4, and 5 of 
pl. 1). In each of thirty-seven cells, divided among five cysts 
(nos. 1, 4, 5, 6, and 8) and five follicles (A, C, E, F, and H), 
the complex consists of eleven tetrads and two dyads, one of which 
is the accessory (figs. 6, 7, 8, 9, and 10 of pl. 1). 
In addition to the two classes of second spermatocytes, con- 
taining, respectively, eleven and twelve dyads, typical of the 
Acrididae, there is present a thirteen dyad class (follicles K and 
M). 
There are at least two classes of spermatogonia, those con- 
taining the normal number of chromosomes (cysts 16 and 17) 
and those containing twenty-five dyads (cyst 15). 
Chromosome counts were made in every cyst containing cells 
(of whatever generation) with mitotic figures in each of the four 
