1
The ventral surface is finely striate, and this surface alone is ciliated.
2
The mouth is large and placed near the center of the ventral surface.
3
The mouth lies in the middle, or near the front of the ventral surface.
4
The ventral surface is nearly straight or but slightly arched; the dorsal is quite convex.
5
Henceforth motionless, it lies on its back, its ventral surface fully exposed from end to end.
6
The ventral surface is flat, the dorsal surface is arched in the middle region of the body.
7
The adoral zone is fairly well developed, but not distinctly marked off from the remaining ventral surface.
8
Unlike modern amphibians, with their slimy skin, the ventral surface and sometimes over the back as well.
9
Each time, we see a slender, horny prickle darting from the ventral surface, close to the end.
10
It begins to sever completely from the embryonic vesicle, with which it is connected at the ventral surface.
11
The lower side, where the footstalk arises, is nearly straight, and I have called it the ventral surface.
12
In many of the lower mammals we find a number of milk-glands at different parts of the ventral surface.
13
The large, open mouth lies on the anterior half of the ventral surface, and is elongate and oval in outline.
14
One branch extends up the middle of the dorsal surface, and the other up the middle of the ventral surface.
15
The peristome begins as a small depression, but becomes larger until it takes in nearly all of the ventral surface.
16
From front to rear, in order, all the segments are stung on the ventral surface, except the three operated on.
