436 THOS. H. MONTGOMERY jr., 
of this tissue also surrounds the intestine (the medio-ventral body 
cavity being absent here). From the region of the oviducts forward 
it becomes reduced in amount, somewhat modified in structure, and 
is continued from there forward as the substance of the mesenteries 
(small-celled parenchym). Anteriorly the mesenteries pass over con- 
tinuously into a large-celled parenchym, as has been shown. The 
intermuscular tissue may be a degenerate parenchym of this category. 
In the head region the sheath of the eye appears to be a fibrous 
parenchym, and has been described more fully under the section “Eye”. 
These are the only forms of connective tissue found in the body. 
In the female this parenchym does not seem to be degenerate in 
character (with the exception of the intermuscular tissue), nor yet 
does it seem to be proliferating since no signs of cell division were 
found; in fact in the adult condition it is only the ova within the 
uteri that show mitoses. 
B. In the Male. 
In individuals of this sex there are no lateral body cavities in 
the adult condition, but the lateral portions of the whole body are 
filled with the parenchym (Par Fig. 83, Pl. 42; Figs. 84, 87, 88, 90, 
Pl. 43). The medio-ventral cavity (M. V. Cav Figs. 83, 84, 88, 90) 
is well developed, has the same general relations as in the female, 
‘and extends from a short distance behind the cephalic ganglion 
(M. V. Cav Fig. 3, Pl. 37) nearly to the region of the vasa deferentia. 
This cavity is bounded on all sides by parenchym, and frequently, 
particularly in its anterior portion contains a coagulum of a staining 
substance (Fig. 90, Pl. 43). A medio-dorsal cavity is also present 
but is smaller than in the female and does not extend so far forward 
(iM. D. Cav Fig. 84). The fact of there being no lateral body cavities 
explains why there are no dorso-ventral mesenteries in the male com- 
parable exactly to those of the female: the median parenchymatous 
lining of the testes (Tes Figs. 83, 84, 88, 90) is comparable to that 
portion of the mesenteries which in the female line the median sides 
of the uteri; but the lateral parenchymatous lining of the testes ex- 
tends to the body wall and there is no well marked perienteric 
membrane. 
The head and the anterior trunk region as far back as the com- 
mencement of the testes is filled with a large-celled parenchym 
essentially similar to that of the female (Fig. 90 Par). In the cloacal 
region (Figs. 86, 87) and backwards from that to the end of the tail 
