a^ 
204 PROF. HUXLEY ON THE AGAMIC REPRODUCTION 
layer of external transverse, and internal longitudinal, striated muscles. After entering 
the sixth abdominal somite, it divides into two branches—the oviducts (DD), whose walls 
exhibit the same muscularity, but are less thick. Both vagina and oviducts are lined by 
a well-developed epithelium. 
The oviducts divide into four ovarian cæca, whose delicate structureless wall is un- 
provided with muscles, and lined by a columnar epithelium. Each cæcum is ordinarily 
divided by constrictions into six chambers. Of these I found the posterior (that nearest 
the vulva) (E) always empty, and of nearly the same length, though of a much smaller 
diameter than that which precedes it, or the fifth from the apex of the ovarium. This 
fifth chamber (F) always contained a fully formed ovum, provided with a chorion and 
an opake coarsely granular yelk. 
The fourth chamber (G) is smaller than the fifth ; it contains a coarsely granular vitelline 
mass in which no germinal vesicle can be perceived, and which ordinarily has no invest- 
ing membrane. 
The third chamber (H) is still smaller; and its contents are usually only slightly gra- 
nular, so that the germinal vesicle and spot of the ovum in this chamber are beautifully 
distinct (fig. 2). 
The second chamber (I) is the smallest of all; the germinal vesicle and spot of its rudi- 
mentary ovum can be easily seen; and but very few fine granules are deposited in the 
substance which will eventually form the yelk. 
A clear cord-like mass (q), commonly divided longitudinally, so as to appear double, 
traverses this chamber, and can be traced into the next. 
The apical chamber (K) is as large as the third, but is longer transversely than longitudi- 
nally, while the reverse is the case with the third chamber. Its outer wall is formed by 
a continuation of the same structureless membrane as that which constitutes the rest of 
the cecum. The epithelium (p), which is particularly thick in the upper part of the second 
chamber, especially at the neck or constriction between the first and second, is suddenly 
attenuated as it spreads on the inner face of the wall of this chamber, and becomes very 
thin from the flattening of its cells. From having the characters of a cylinder-, it takes 
those of a pavement-epithelium. 
It is at first extremely difficult to understand the nature of the contents of the apical 
chamber. All its anterior part appears to be filled with about a dozen closely appressed 
bodies (2), which, if examined without due attention, or under a low power only, may easily 
be confounded with ova. Each of these bodies has a sort of wedge shape, such as would 
result from the compression of rounded masses in a spherical envelope which they nearly 
fill. Its apex is turned inwards ; its base outwards. Each consists of a thick transpa- 
rent outer coat closely investing a denser and well-defined membranous sac. The latter 
contains a clear substance, in which many irregular granules are imbedded. The lines of 
separation between the appressed sides of these bodies are well seen, either in a sectional 
sr view. In the latter case, they appear as polygonal meshes; in the 
si tha gas BE epee aga bodies from one another, and bounding their curved d 
rhe dede rå epithelium. On tracing the lines of separation towards the cen 
e ends of these bodies, they become lost, and a mere clear, homogeneous 
