120 THE AMERICAN NATURALIST. [Vor. XXXIV. 
of its course is represented by a narrow tube. These five cap- 
sules are loosely connected together by tracheze, but there is 
no tunic investing them; and their proximal ends are con- 
nected by terminal fibres (1). Distally they connect (at 4) and 
so join the vas deferens (5); and the vas deferens of the right 
side joining with that of the left, these internal organs termi- 
nate in the ductus ejaculatorius (6). The vasa are thin- 
walled, transparent tubes, considerably 
more delicate than the testes. In the 
drawing (Fig. B) I have represented the 
follicles more separated than they usu- 
ally lie. 
In this description I calla follicle of 
the testis the two portions 
numbered 2 and 3 in the 
figure. . In the testes 
2 Studied in December both 
these parts are filled with 
spermatozoa, and I can find 
on sections no evidences 
of earlier spermatogenetic 
stages; consequently, the 
testes must be considered 
physiologically mature. 
But is the portion marked 
3 really a portion of a tes- 
TN ticular follicle, or is it not 
rather to be considered a vas deferens? If the latter alternative 
be correct, we should regard the five follicles (2) composing each 
testis to possess each a separate vas deferens (3), these five vasa 
deferentia joining posteriorly (at 4) to form a single vas (5). 
This point can be determined only by an examination of the 
organs in young individuals, with regard to whether in early 
stages spermatogonia and spermatocytes occur in the parts 
marked 3. 
The ovaries differ in appearance according to the season of 
the year, Ze. the state of growth of the ova. In June the 
ovarioles (follicles) are beaded in appearance. The small ova- 
"n 
