604 
ME. LUBBOCK ON THE GENEEATIVE OEGANS, AND 
in my glass, and they consisted of eight segments, including the head ; they had three 
pairs of legs, which were attached to the second, fourth, and fifth segments, leaving 
the first, third, sixth, seventh, and eighth without feet. 
By the month of October most of the females had laid their eggs. The ovary then 
contains another set, the largest of which were, in four specimens examined by me, 
just beginning to become dark. These do not appear to be laid until the following 
spring ; at least this was the case with some specimens which I kept in confinement. 
The spermatozoa much resemble those of Phalangium. They are small, elliptical 
bodies about swoth of an inch in length, and containing a bright, rod-like nucleus. 
Stein appears to be the only naturalist who has hitherto described them from personal 
observation. He, however, figures them as round cells, with a tendency to arrange them- 
selves in straight lines. I, on the contrary, generally found large quantities heaped 
together in the testicular sacs, and in the vasa deferentia masses of spermatozoa not 
unlike those found in Clielifer. Neither in Polydesmus nor in Glomeris does Stein either 
mention or figure the nucleus in the elliptic or fusiform seminal cells. M. Fabee says, 
“Chez \e Polydesmus complanatus je n’ai trouve que de menus corpuscules anguleux, 
sans forme determinee, reunis plusieurs ensemble en petites pelotes mamelonnees ” ; I 
also have constantly found these small masses of angular bodies in the tubular parts of 
the male generative organs, but not in the lateral sacs. They do not, however, appear 
to have any relation to the spermatozoa, and seem rather like a product of excretion. 
Chilopods. 
(Plate XVI. figs. 8-13). — In the genus Lithohius I have examined three 
species — L. variegatus, L. pilicornis, and L. Sloanei. 
The ^ ulva is, as probably in all the Chilopods, situated at the posterior part of the 
body ; and the ovary is in the form of an elongated sac, which extends for a longer or 
shorter distance towards the head. Besides having the orifice at the posterior instead 
of the anterior end of the body, the female generative organs of the Chilopods differ 
from those of the Chilognaths in the important fact, that the ovary lies above instead 
of belovo the intestine. 
The eggs arise singly, each in a separate follicle, and, as I have already mentioned to 
be the case in Chilognaths, project into the general cavity of the ovary, instead of from 
its external surface. They occur in the same individual in all stages, and without any 
regularity, the largest and smallest lying side by side in the most complete confusion. 
The ovarian wall consists, as usual, of an outer structureless membrane, while the small 
epithehal cells are confined to the single stroma and the ovarian follicles. 
The smallest Purkinjean vesicles which I met mth were rather less than 
an inch in diameter. I did not see any cells intermediate in character between the 
ordinary epithelial ceUs and the smallest Purkinjean vesicles, but I am inclined to think 
that the latter are modifications of the former. The macula was distinct, and apparently 
consisted of several small rounded bodies more or less closely attached to one another. 
