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It may be that the position is perilous for Philanthus. The posture of attack and self-protection is abandoned, and the ventral area, more vulnerable than the back, is exposed to the sting of the bee.
These, the highest vertebrates of the time, had not yet advanced beyond the embryonic stage of the more or less cartilaginous skeleton and the persistent notochord. Unlike modern amphibians, with their slimy skin, the Carboniferous amphibians wore an armor of bony scales over the ventral surface and sometimes over the back as well.
There is at first, both before and behind, a thin partition between the external cutaneous pit and the blind end of the gut the throat-membrane in front and the anus-membrane behind; these disappear when the connection takes place. The thin wall of this simple alimentary tube and its ventral appendages is found, on microscopic examination, to consist of two strata of cells.
The Cetonia-larva is a square meal in itself, one large dish, which has to retain a suitable freshness until the end. The young Scolia, therefore, must attack with discretion, at the unvarying point chosen by the mother on the ventral surface, for the entrance-hole is at the exact point where the egg was fixed.
But, in addition to the general shape of the body, their affinity to the eel is attested, by their confluent fins, by the absence of ventral fins, by the structure of the mouth and its dentition, by the apparatus of the gills, which opens with an inferior slit, and above all by the formation of the skeleton itself. Fishes, vol. iii.
"Here is news indeed! I wonder do I flatter myself? or am I the cause of these ventral perturbations?" He was quite capable of choosing out a graceful posture, even with no one to behold him but myself, and all the more if there were any element of peril.
The horny integuments of the pseudochrysalis are split along a fissure which includes the whole ventral surface and the whole of the head and runs up the back of the thorax. This cast skin, which is stiff and keeps its shape, is half-enclosed, as was the pseudochrysalis, in the skin shed by the secondary larva.
Doubtless I covered ages of evolution in the dream. It is in this way through the stimulus of Fear that the rudiments of organs of locomotion were begun. And they came in the Beginnings on the ventral side, because that side was pressed close to the earth. Every sense, volition, reasoning power everything was generated and fostered by Fear in the Beginnings.
It is an elaborate and extensive bony structure, composed of no less than twenty bones of different shapes and sizes. Seven of them form the spacious shell that surrounds the brain, in which we distinguish the solid ventral base below and the curved dorsal vault above.
Let us go to the codfish: here you see is the forearm, in this large pectoral fin carrying your mind's eye onward from the flapper of the porpoise. And here you have the hinder limbs restored in the shape of these ventral fins. If I were to make a transverse section of this, I should find just the same organs that we have before noticed.
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