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Updated: May 17, 2025
Guagugiana being full of these blotches which we call the French pox, was put by a woman named Guabonito into a guanara, or bye-place, and there cured. He was afterwards named Biberoci Guahagiona, and the women gave him abundance of guanine and cibe to wear upon his arms.
The same is true of the yellow, black, purple or orange pigment that forms a coating under the skin. In short, by utilizing, in a different chemical combination, the waste products of animal oxidization, the magnificent Spider rivals the magnificent caterpillar; she beautifies herself with guanine as the other does with its uric acid.
Piperine has also been made by the uniting of piperidine and piperic acid, and, as piperidine has already been formed from pyridine, we have here a true synthesis also. Both theobromine and caffeine, its methyl derivative, have been made from xanthine, which itself can be formed from guanine, a constituent of guano.
It is their magnificent opaque white granulations which, seen through the transparent skin, form the snow-white stripes in the live Spider. Treated with nitric acid on the microscopic slide, they do not dissolve nor produce effervescence. Uric acid then is not present in this case; and the substance must be guanine, an alkaloid known to be the urinary product of the Spiders.
The cibe or colecibi are made of a stone like marble, and are worn round the wrists and neck, but the guanine are worn in their ears, and they sound like fine metal. They say that Guabonito, Albeboreal, Guahagiona, and the father of Albeboreal were the first of these Guaninis.
These products are carbon dioxide, formic acid, ammonia, methyl-amine, and sarcosine, the last three being of course in combination with the excess of hydrochloric acid. The artificial preparation of theobromine and caffeine from xanthine, and guanine also show clearly their relations.
Let us abridge this dry subject; let us be content with these few data, which could if necessary be corroborated by many others. What does the little that we have learnt teach us? It tells us that the materials rejected by the organism, guanine, uric acid and other dross from life's refinery, play an important part in the coloration of the insect.
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